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Cobra Ode User Manual V1.5

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Cobra ODE User Manual v1.5

The Cobra ODE is the world's most advanced and feature rich ODE for PS3 which is also simple and easy to use!
The following consoles are supported:
FAT;
CECHA (PATA)
CECHB (PATA)
CECHC (PATA)
CECHE (PATA)
CECHG (PATA)
CECHH (PATA)
CECHK (PATA)
CECHL (SATA) (most consoles)***

SLIM;
CECH2XXX (SATA)
CECH21XX (SATA)
CECH25XX (SATA)
CECH3XXX (SATA)

SUPER SLIM;
CECH4XXX (SATA)

***FAT consoles (SATA) CECHL, CECHM, CECHP and CECHQ with drive controller BMD-21 will be supported from rev 3.1 onwards

Feature list:
Supports virtually all PS3's including previously "unbreakable" 2k5,3k and 4k systems!
Homebrew now possible on previously "unbreakable" 2k5,3k and 4k systems!
Play games on SEN in pass-through or emulation modes**!
On screen selection of games through Cobra ODE manager or Cobra ODE Browser in XMB
Emulation or pass-through modes
Advanced Smart Fusion AES encryption and decryption engine on board
Fully updatable high speed FPGA's and high speed secure MCU on board
Updatable via USB storage
Expansion ports for future proofing
Simple and easy to use
High quality components used throughout
Built at a high tech facility
Solderless installation on all FAT* and SLIM (2xxx and 21xx) series
Easy installation on 25xx,3xxx and 4xxx series Slim and Super Slim series consoles with QSB (quick solder board)
Easy setup for PATA or SATA consoles
Advanced software onboard and frequent free updates
BD Movie support to follow*** (In a future update)
PS1 and PS2 ISO support to follow (on BC consoles in a future update)
PS3 BD game disc dumping on all PS3 consoles is supported and can be enabled through third party managers (dumping throughput will be improved in future updates)
**We cannot guarantee the longetivity of this feature for people using homebrew apps.

Selection of Emulation or Pass-through mode:
Pass through is enabled when the switch is to the left as shown. Emulation mode can be selected by simply sliding the switch on the clip on PCB to the right as shown in the picture below. This enables the emulation functionality of the device and allows you to run games from external mass storage on your PS3. Pass-through mode silently disables the ODE and allows your PS3 to act as a stock OFW or CFW console, when you want to play games directly from the BD drive, watch movies or go online for SEN etc...
Please do not switch between Pass-through and Emulation modes whilst the console is running.
Only switch modes when the console is in standby or powered off.

Connecting USB storage:
There are two USB connectors on the clip on PCB, a full size USB A connector for connection of mass storage devices and a Mini USB B connector for the optional UI commander (currently not required).
As shown in the photo below. Please connect your USB mass storage device to the USB A connector.

Three types of USB cable are included in the kit:
USB 2.0 Mini USB Y cable
USB 3.0 Y cable
USB extension cable
The USB 2.0 or USB 3.0 may be coupled with the USB extension cable and connected to a port on the front of the PS3 and then to the CLIP on USBA A connector and your hard drive, in cases where a standard USB cable cannot supply enough power.

USB mass storage preparation:
The Cobra ODE supports reading files from the vast majority of USB HDD's and USB pen drives available in the market.
Kindly follow the instructions and notes below for setting up USB storage devices for use with the
Cobra ODE.
- Your USB pen drive or USB HDD must be formatted with either NTFS 4k (4096 allocation unit size) or FAT32 file system: If formatting the NTFS partition, make sure the cluster size (named "Allocation unit size" in Windows' format tool) is a multiple of 2048. This means that 512 and 1024 cluster sizes will not work, but 2048 and 4096 will work. We recommend you use 4096 which should be the default and recommended setting that Windows will use for drives with a capacity lower than 16 TB.

- Should you decide to use FAT32, then this must be the first partition on the drive and the subsequent partition may be NTFS

- The first NTFS partition found will be the partition recognized by the ODE
- When an HDD has both FAT32 and NTFS partitions, then the FAT32 partition will be ignored by the
ODE
- The partition should contain a COBRA directory containing the "cobra.db" file (the .db database file can be downloaded from the cobra-ode.com downloads section) and a game manager iso with the filename "manager.iso".
- The COBRA manager iso can also be substituted by any other manager which incorporates support for our board (instructions for enabling Cobra ODE in other managers is provided at the end of this document) - PS3 games must be placed in a directory named "PS3_GAMES" in the root of the partition.
- Filenames can be complex or simple, so long as unicode and special characters are avoided.
- User may split an iso into multiple files (convenient if you have a FAT32 partition, subsequent files must however be named with extension .1, .2, .3 and so on
Example:
uncharted.iso.0, uncharted.iso.1, uncharted.iso.2, or; uncharted.foobar, uncharted.foobar.1, uncharted.foobar.2

- We would recommend partitioning your hard drive with a 10MB FAT32 partition as the first partition on the drive, and the second partition as NTFS taking the rest of the HDD space. The FAT32 partition can then be used for updates to the ODE.

The final file structure should look something like this :

NTFS/FAT32 partition
|
|_ COBRA
| |
| |_ cobra.db
| |_ manager.iso
|
|_ PS3_GAMES
|
|_ game.iso
|_ uncharted.dec
|_ split.iso.0
|_ split.iso.1
|_ split.iso.2

- The genps3iso tool may be used to generate .iso images from a directory structure of a game dumped using CFW. Split type files generated by the tool are also supported (available from our downloads section on the cobra-ode.com website).
- As a user convenience we also support iso files generated by the 3k3y ripper tool. However, 3k3y iso files must be decrypted before use on Cobra ODE. You should first decrypt the 3k3y generated iso file using the "ISOCrypto" button in the 3k3y ripper PC application.
Please note that in order to benefit from the superior performance of the Cobra ODE device, the decrypted images files should be extracted and then re-processed with the Geniso tool we provide for better performance.

Booting requirements :
- Cobra ODE requires an original disc to be inserted in the drive at all times to boot the Cobra ODE manager and run games from HDD. The game disc used must be supported by the Cobra ODE database. A current list of supported titles is available in the downloads section of our website. We will provide updates to expand the list of supported titles.
Error conditions:
- On booting the PS3, the XMB will display the COBRA ODE manager icon, if the icon is not shown, then you have not inserted a disc into the PS3. Should the XMB fail to display the COBRA ODE manager, an error message may be displayed in the XMB which will inform you of the current error condition. Currently supported error messages are as follows :

"Cannot find Hard Drive. Make sure HDD is plugged into the USB port"

"Hard drive does not contain a valid NTFS or FAT32 partition"

"Cannot find COBRA/cobra.db file. Please refer to user manual."

"Error loading COBRA/manager.iso file."

"COBRA/manager.iso file is too fragmented. You should defragment your hard drive. Please refer to user manual."

"ISO file is too fragmented. You should defragment your hard drive. Please refer to user manual."

"Error loading selected ISO file."

"Inserted disc is not supported by the COBRA database."

"Error loading custom manager configuration file."

The error message displayed should provide enough information to rectify the problem by either taking the necessary action directly or by additionally referring to the user manual for guidance.

Defragmenting your HDD
Defragmenting your hard drive may be required by the Cobra ODE in some circumstances.
Defragmenting increases performance and reduces the chances of errors. Windows can be used to defragment your HDD. We recommend that you do this occasionally to enjoy best performance.

Using Cobra ODE manager:

Once executed the COBRA ODE Manager will display a list of current valid iso images on your HDD's partition, game selection is achieved by simply scrolling (using the d-pad of your PS3 controller) to the image you wish to play and then pressing the X button on your pad.

The Cobra ODE 1.1 update no longer requires you to restart the console to select the game. Simply eject the disc in the drive and reinsert it (or slide door cover open and then closed in the case of 4xxx series to complete the game selection). You can still restart the console via the controller to complete game selection, but it is no longer necessary.

Restarting the PS3 during game play will retain your current game selection, for the sake of convenience. Should you wish to return to the Cobra ODE manager in order to choose another game or homebrew application, then simply eject the disc via the XMB and reinsert it, or in the case of the 4k series PS3, slide the door cover open and then closed again.
Starting from Cobra ODE 1.4 update, you can however disable this and have the PS3 return to the manager after each reboot by enabling the manager.on_reboot=1 option in the cobra.cfg configuration file.
Cobra ODE has been designed with simplicity and ease of use in mind! Enjoy....

Using Cobra ODE Browser:
An alternative to the COBRA Manager homebrew application is to use the COBRA ODE Browser which does not require the use of homebrew and may appear more stealth to the PS3.
The Cobra ODE Browser can only be used from MCU firmware version 1.5 and requires the use of the genps3extra PC application to be run every time the list of ISO files changes on the HDD.
There will be two menus for the Cobra ODE Browser, the first one in the Game category of the XMB, it will show the game icon and title :

And the second Cobra ODE Browser is in the Video category of the XMB, which will show the game icon, the animated icon, the background image and play the game's music :

To generate the Cobra ODE Browser, simply run the genps3extra application and select the
COBRA_ODE_BROWSER directory when asked for the EXTRA directory, then select the COBRA directory from your HDD. It will then scan the games on the HDD and generate a new manager.iso and cobra.cfg configuration file tailored to your HDD games which will provide you with the browser for game selection.
The genps3extra application will also ask you if you wish for the manager to appear as a BD disc.
Enabling that option will make the manager appear as a bluray disc to the PS3, increasing even more the stealth for the more paranoid users. Note however that doing so will only give you access to the
ODE Browser through the Video category of the XMB and will disable access to the Browser from the
Game section of the XMB.
Note that the PS3 has a limit of 100 items in the browser for the Game category and 200 items in the browser for the Video category. If you have more than 100 iso files, it is suggested to use the ODE
Browser from the Video category of the XMB, and if you have more than 200 iso files, it is suggested to use the Cobra Manager instead.
Do not forget to rerun the application every time your list of iso files changes on the HDD.

Once you have made your game selection from the browser, you must reboot the console or eject the disc in the drive and reinsert it (or slide door cover open and then closed in the case of 4xxx series) in order to switch to the selected game.
Should you wish to return to the Cobra ODE browser in order to choose another game or homebrew application, then simply eject the disc via the XMB and reinsert it, or in the case of the 4k series PS3, slide the door cover open and then closed again.
Starting from Cobra ODE 1.4 update, you can however disable this and have the PS3 return to the manager after each reboot by enabling the manager.on_reboot=1 option in the cobra.cfg configuration file.

The genps3extra application allows you to customize the behaviour of the browser depending on the files available in the EXTRA directory :
If the EXTRA directory has a PS3_EXTRA/PARAM.SFO file, then it will generate browser items for the
PS3_EXTRA section which will appear in the Game category of the XMB. If a
PS3_EXTRA/D000/DATA000.MP4 file exists, then it will be used for every item in the Game browser and that video will be used every time you select a game. If a PS3_EXTRA/D000/DATA000.PKG file exists, then it will be used for every item in the Game browser and that package will be installed every time you select a game. If a PS3_EXTRA/D000/DATA000.P3T file exists, then it will be used for every item in the Game browser and that PS3 theme will be installed every time you select a game.
If there is no MP4/PKG/P3T file, then a fake PKG file will be generated which will show an error on
XMB when trying to run it, however, the game will still be correctly selected, despite the error on
XMB.
If the EXTRA directory has a PS3_CONTENT/VIDEODIR/D000/DATA000.MP4 file, then it will generate browser items for the VIDEODIR section which will appear in the Video category of the XMB. The
MP4 will be used for every item in the Video browser and that video will be used every time you select a game. Make sure the video has a file size greater than 128KB in order to avoid fake selections. Cobra ODE has been designed with simplicity and ease of use in mind! Enjoy....

Instructions to generate iso :
In order to generate a valid ISO, run genps3iso and specify the correct directory (The parent directory which contains the PS3_GAME directory) and the output .iso file, as well as whether or not to split the iso into 4GB files. The resulting iso file (or files) can be put into the PS3_GAMES directory of the USB drive and will work with the COBRA manager.
Splitting the iso into 4GB files is only useful if you want to use a FAT32 drive.

Updating the MCU firmware of the Cobra ODE
From time to time MCU updates will be made available for the Cobra ODE. You can check for the latest version from the downloads section of our website on http://www.cobra-ode.com.
Once downloaded, extract the file "mcu.rom" to your PC and then copy it to a FAT32 formatted USB stick or USB HDD, in the root directory. Power off the console and remove the power cable entirely or use the switch on the back for PS3 fat models. Wait 5 seconds, then connect the USB stick or USB drive to the Cobra ODE clip on board then plug back the power on the console.
The update should takes a couple of seconds to finish. The LED should flash very briefly, and appear purple for a second, indicating that the update is in progress, then it becomes solid red to indicate there is no manager or database on the usb stick, or green if the fat32 drive you're using also contains the manager and cobra.db file. Once it is done, then you can turn on the console and enjoy the new features provided by the firmware upgrade.

Updating the BOOTLOADER firmware of the Cobra ODE
Occasionally, an update to the bootloader will be made available. You can download the latest bootloader version from the downloads section of our website on http://www.cobra-ode.com.
Once downloaded, extract the file "ldr.rom" to your PC and then copy it to a FAT32 formatted USB stick or USB HDD, in the root directory. Power off the console and remove the power cable entirely or use the switch on the back for PS3 fat models. Wait 5 seconds, then connect the USB stick or USB drive to the Cobra ODE clip on board then plug back the power on the console.
The update should takes a couple of seconds to finish. The LED should flash very briefly, and appear purple for a second, indicating that the update is in progress, then it becomes solid red to indicate there is no manager or database on the usb stick, or green if the fat32 drive you're using also contains the manager and cobra.db file. Once it is done, then you can turn on the console and enjoy the new features provided by the firmware upgrade.
*IMPORTANT* Please note that your device may be damaged if there is a loss of power during the update of the bootloader. Make sure you connect your power cable correctly and do not disconnect it while the update is in progress. There are no risks however during a normal update of the MCU firmware, and bootloader updates will be very rare.

COBRA ODE Configuration file
Since Firmware version 1.4, a configuration file can be placed in the COBRA directory with the filename cobra.cfg.
The configuration file takes the form of : key=value MCU v1.0 to 1.3: Configuration file not supported
MCU v1.4: Three options are supported : manager.type=disabled manager.on_reboot=1 game.path=. MCU v1.5: Six new options are support : manager.type=custom manager.type=custom+homebrew and manager.type= homebrew+custom manager.disctype=cd/dvd/bd/ps1/ps2/ps3 game.disctype=cd/dvd/bd/ps1/ps2/ps3 iso.INT.sector=HEX iso.INT.path=

The available configuration options for the latest MCU version are : manager.type=homebrew/disabled/custom/custom+homebrew/homebrew+custom Allows setting the type of manager the ODE should handle when it is in manager mode. homebrew The default homebrew manager mode where the /dev_bdvd/COBRA directory is populated with ode and iso information files.

disabled

If set, the manager is disabled and the ODE will directly boot into ISO mode. The iso file that will be loaded is /PS3_GAMES/game.iso by default, and can be changed with the game.path configuration option.

custom

A custom manager mode where the
/dev_bdvd/COBRA directory is not created, and the game triggers are defined with the iso.INT.sector and iso.INT.path configuration options. custom+homebrew

A custom manager mode where the
/dev_bdvd/COBRA directory ispopulated with ode and iso information file, and where iso.INT.sector and iso.INT.path configuration options can be used to create custom sector triggers. homebrew+custom

Any value other than the ones listed here will default back to the homebrew manager mode. manager.on_reboot=1 If set, the manager will be reloaded every time the PS3 reboots. The ISO mode will not stay persistent between reboots. This can be useful for users with PS3 consoles in hard to reach places.
Any value other than '1' will default back to the behavior or switching to manager mode on disc eject only. game.path=/PS3_GAME/game.iso
If manager.type=disabled is set, then this option will specify the path of the ISO to load when the
HDD is inserted. The path is not case-sensitive, and path separator is the '/' character. The path has a limit of 128 characters. If this option is not set, then it will default to /PS3_GAMES/game.iso manager.disctype=cd/dvd/bd/ps1/ps2/ps3 If set, the disc type of the manager can be overridden and the ODE will emulate a different type of disc inserted in the tray. This is useful in order to experiment with different disc types, other than
PS3 discs, and could help the manager appear more stealth.

cd

The manager iso will appear as being burned on a CD-ROM disc

dvd

The manager iso will appear as being burned on a DVD-R disc

bd

The manager iso will appear as being burned on a BD-R disc

ps1

The manager iso will appear as being an original
PS1 disc

ps2

The manager iso will appear as being an original
PS2 disc

ps3

The manager iso will appear as being an original
PS3 disc

Note that appearing as a PS1 or PS2 disc does not guarantee that the PS3 will recognize the iso as valid PS1/PS2 discs. It will only appear as being a PS1/PS2 disc type. This cannot add support for
PS1/PS2 games using this method. It is only for experimenting with different types of discs.

Any value other than the ones listed here will default to appearing as the type of disc inserted in the tray. game.disctype=cd/dvd/bd/ps1/ps2/ps3
If set, the disc type of a game ISO can be overridden and the ODE will emulate a different type of disc inserted in the tray. This is useful in order to experiment with different disc types, other than
PS3 discs. cd The game iso will appear as being burned on a
CD-ROM disc

dvd

The game iso will appear as being burned on a
DVD-R disc

bd

The game iso will appear as being burned on a
BD-R disc

ps1

The game iso will appear as being an original PS1 disc ps2

The game iso will appear as being an original PS2 disc ps3

The game iso will appear as being an original PS3 disc Note that appearing as a PS1 or PS2 disc does not guarantee that the PS3 will recognize the iso as valid PS1/PS2 discs. It will only appear as being a PS1/PS2 disc type. This cannot add support for
PS1/PS2 games using this method. It is only for experimenting with different types of discs.

Any value other than the ones listed here will default to appearing as the type of disc inserted in the tray. iso.INT.sector=HEX
If the manager is in custom or custom+homebrew mode with the manager.type=custom configuration option, then this option can be used to define the sector of the game trigger for a specific game. The INT value must be a base 10 integer lower than 500 and determines the iso index.
The HEX value must be a hexadecimal value representing the sector number to act as a trigger. If the game is triggered, by reading of that sector, then the iso file in the matching iso.INT.path option will be used. iso.INT.path= If the manager is in custom or custom+homebrew mode with the manager.type=custom configuration option, then this option can be used to define the path to the iso when the associated iso.INT.sector configuration option is triggered. The INT value must be a base 10 integer lower than
500 and determines the iso index. The path is not case-sensitive, and path separator is the '/' character. The path has a limit of 128 characters. If this option is not set, then it will default to
/PS3_GAMES/game.iso

Here are examples of valid COBRA/cobra.cfg configurations:
Homebrew manager with automatic return to manager mode on reboot manager.type=homebrew manager.on_reboot=1

Manager is disabled and the /PS3_GAMES/Uncharted.iso game is automatically loaded. manager.type=disabled game.path=/PS3_GAMES/Uncharted.iso

Custom manager appearing as bluray disc with triggers for 3 games and returns to manager mode on reboot manager.type=custom manager.disctype=bd manager.on_reboot=1 iso.0.sector=400 iso.0.path=/PS3_GAMES/Uncharted.iso iso.1.sector=6A0 iso.1.path=/PS3_GAMES/GTA5.iso iso.3.sector=AC0 iso.3.path=/PS3_GAMES/Killzone3.iso

Note: The PS3 always reads in groups of 32 sectors, on the 0x20 sector boundary. For a trigger to be effective, it must not be accidentally read when a different file is read from the same group of 32 sectors.
Note 2: In the case of custom disc with PS3_CONTENT/VIDEODIR, the PS3 will read the header and footer of every MP4 file to retrieve its duration and validate it, which will trigger every game. It is therefore recommended to always use MP4 file longer than 128KB and set the trigger to 32 sectors or more after the start and before the end of the file.

Instructions to generate valid homebrew iso :
In order to generate an iso of a homebrew application, create the necessary directory structure
(PS3_GAME directory containing the PARAM.SFO and other standard files just like the .pkg would), and generate the EBOOT.BIN using Naehwert's scetool using the following command : scetool --sce-type SELF --compress-data FALSE --self-type APP --key-revision 0004 --self-fw-version
0003004100000000 --self-app-version 0001000000000000 --self-auth-id 1010000001000003 --selfvendor-id 01000002 --self-cap-flags
00000000000000000000000000000000000000000000003b0000000100040000 -e homebrew.elf
EBOOT.BIN

Or you could add the following line to your makefile :
EBOOT.BIN: $(TARGET).elf scetool --sce-type SELF --compress-data FALSE --self-type APP --key-revision 0004 --self-fwversion 0003004100000000 --self-app-version 0001000000000000 --self-auth-id 1010000001000003
--self-vendor-id 01000002 -–self-cap-flags
00000000000000000000000000000000000000000000003b0000000100040000 -e $< $@=

To generate the iso for an existing homebrew app for which you do not have access to the source code you simply extract the .pkg file into a directory, then unself the EBOOT.BIN and recreate it using the above mentioned command.

Valid iso file specifications :
If you wish to generate a valid ISO file programmatically, or implement your own version of genps3iso, then we provide you with the specifications of the iso file so it can be recognized by the
PS3 as a valid disc image.
A disc image is a normal iso file with the exception of the first two sectors which contain information that will be used by the PS3. The iso file's content can either be encrypted or plain-text, the first sector defining which sector regions are encrypted and which aren't. Another consideration is that the PS3 will always read in 64KB blocks, 32 sectors at a time of 2048 bytes each. An encrypted region must always start and end at the 0x20 sector index boundary.
The first sector has the following format :
32 bit big endian integer : number of plain regions in the disc image
32 bit zeroes array of containing :
32 bit big endian integer : start sector of the plain region
32 bit big endian integer : end sector of the plain region (inclusive)
The encrypted regions are any region that exists between plain regions. For example :
00000000
00000010

00 00 00 02 00 00 00 00
00 00 07 c0 00 00 08 5f

00 00 00 00 00 00 02 3f
00 00 00 00 00 00 00 00

|...............?|
|......._........|

This iso has 2 plain regions, starting from sector 0 to 0x23F and from 0x7C0 to 0x85F, and one encrypted region from 0x240 to 0x7DF. The total number of sectors in the iso would be 0x860 sectors. All SELF files must reside on encrypted sectors, as well as the LICDIR/LIC.DAT license file.
The second sector of the iso must contain the string “PlayStation3” padded with zeroes to 16 bytes total, followed by the game id padded with spaces to 32 bytes total, then 16 bytes of zeroes then
448 bytes of random data.
For example :
00000800
00000810
00000820
00000830
00000840
...
000009f0

50
42
20
00
c9

6c
43
20
00
27

61
45
20
00
db

79
53
20
00
82

53
2d
20
00
7c

74
30
20
00
18

61
30
20
00
b5

74
39
20
00
c5

38 f3 59 1d 97 42 7d 17

69
30
20
00
7e

6f
38
20
00
39

6e
20
20
00
4e

33
20
20
00
cb

00
20
20
00
ba

00
20
20
00
f0

00
20
20
00
ec

00
20
20
00
2e

|PlayStation3....|
|BCES-00908
|
|
|
|................|
|.'..|...~9N.....|

35 aa c7 f5 ec cc 08 5b

|8.Y..B}.5......[|

The following specifications are pertinent to third party manager compatibility :
On loading the manager iso, the Cobra ODE will automatically and dynamically add a /COBRA directory to the disc structure and populate it with files. A COBRA.NFO file will be available with information about the ODE firmware and other data the ODE needs to communicate. See below for more information. Each valid ISO found on the HDD will appear as a file with its game id as the respective filename. The generated file will have a size of 2048 bytes and will contain information about the iso file. See below for more information. Each title will also have a file with .PNG, .SFO and
.RUN extensions, where the base filename will be the game id. The .PNG and .SFO files respectively represent the ICON0.PNG and PARAM.SFO files inside the .iso and the .RUN file, if read, will tell the
COBRA ODE that that game must be selected. An iso file must provide a .SFO file, but some discs do not have the ICON0.PNG file, such as install discs, so the .PNG file may not be available.
A DISC.ISO file will also be made available which will be a direct access to the real disc in the drive of the PS3.
This can be useful for dumping games. Note that the COBRA ODE will trick the PS3 into automatically decrypting the DISC.ISO, however, the decryption will not be perfect due to the sector position on the disc. Post-processing of the DISC.ISO is therefore required in order to obtain a valid copy of the disc. See below for more information.
Example:
Assuming the HDD has a file "game.iso" with game id BLUS12345, on loading of manager, it will have access to the following files :

/dev_bdvd/COBRA/COBRA.NFO

File containing extra information from the
COBRA ODE

/dev_bdvd/COBRA/DISC.ISO

Disc image of the disc in the drive

/dev_bdvd/COBRA/BLUS12345

File containing information on the iso file

/dev_bdvd/COBRA/BLUS12345.PNG

ICON0.PNG file contained inside game.iso

/dev_bdvd/COBRA/BLUS12345.SFO

PARAM.SFO file contained inside game.iso

/dev_bdvd/COBRA/BLUS12345.RUN

Game selection trigger

Our downloads section on the cobra-ode.com website provides for a simple function (manager.h and manager.c) provided for free use (public domain) which will parse the directory and provide a simple structure, enabling access to all files. Developers using those functions should find it easier to integrate with our product.

The iso file information has the following format :
Firmware 1.0: A null-terminated string containing the original filename of the iso from the HDD. The remainder of the file will be empty.
Firmware 1.3: The first byte will be zero to allow backward compatibility and recognize the format, it is then followed by the filename of the iso from the HDD, preceded by a single byte containing the length of that string. It is then followed by 64 bits representing the file size of the iso file in littleendian format. The remainder of the file will be empty.
Example :
00 08 67 61 6d 65 2e 69

73 6f 78 56 34 12 00 00

|..game.iso......|

00 00 ..........................................

|................|

The COBRA.NFO has the following format :
Firmware 1.0: File did not exist
Firmware 1.2: The file contains 2 bytes, the major and the minor version of the ODE firmware respectively Example:
01 02

Firmware 1.3: The file contains 6 bytes, the structure is extended with a 32 bit little-endian value representing the sector of the disc in which the DISC.ISO file starts. This is necessary for the postprocessing of the DISC.ISO to recreate the original image.
Example:
01 02 0C 0B 00 00

Information about DISC.ISO post-processing :
While the disc is encrypted, the COBRA ODE will instruct the PS3 to decrypt the encrypted sectors from the disc automatically while being read. However, the PS3 uses the sector LBA as the initialization vector for decrypting the sectors. Since the sectors of the DISC.ISO file are positioned on the manager disc on a different sector than the original disc is, the decryption will use the wrong initialization vector. It is therefore needed to XOR the first 16 bytes of every encrypted sector with the appropriate value to recover the original decrypted data. The LBA sector of the DISC.ISO is provided in the COBRA.NFO file since MCU firmware v1.3.
The first 16 bytes of every encrypted sector must first be XORed with the disc's LBA + sector in the file to retreive the AES decrypted block, then XORed with the original sector to get the AES-CBC decrypted block. All other blocks use the cipher data as IV so they will be decrypted correctly.
The third-party library can be used to do it automatically, or can be used as reference for the postprocessing algorithm.…...

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