Editing Downgrading with linux
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'''You should have grafchokolos modules, and patches installed''' | |||
'''This works on 3.55 without a fisical dongle''' | |||
'''Use this method to install lower firmware! You can install a newer firmware ex 3.60 with this method but you will be loosing your hombrew''' | |||
== Thanks to graf_chokolo for bringing linux, with all this goodies back to the PS3 == | |||
= Downgrade Method - Emulating JIG with Linux = | = Downgrade Method - Emulating JIG with Linux = | ||
'''1st step''' – Generating a challenge | '''1st step''' – Generating a challenge | ||
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---- | ---- | ||
You need a dongle | You need a dongle id. | ||
Valid range for dongle IDs is 0×0000 – 0xffff. So choose one, | Valid range for dongle IDs is 0×0000 – 0xffff. So choose one, doesn’t matter which one, but some are revoked !!! | ||
# ps3dm_usb_dongle_auth /dev/ps3dmproxy gen_resp 0xBABE “here is a challenge like this 0xXX 0xXX … of size 20 bytes” | # ps3dm_usb_dongle_auth /dev/ps3dmproxy gen_resp 0xBABE “here is a challenge like this 0xXX 0xXX … of size 20 bytes” | ||
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---- | ---- | ||
The returned value | The returned value shouldn’t be 0xff. | ||
# ps3dm_um /dev/ps3dmproxy read_eprom 0x48C07 | # ps3dm_um /dev/ps3dmproxy read_eprom 0x48C07 | ||
'''5th step''' - Inspect if CORE_OS_PACKAGE.pkg | '''5th step''' - Inspect if CORE_OS_PACKAGE.pkg isn´t damaged | ||
---- | ---- | ||
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ps3dm_um /dev/ps3dmproxy update_pkg 1 0x9 CORE_OS_PACKAGE.pkg | ps3dm_um /dev/ps3dmproxy update_pkg 1 0x9 CORE_OS_PACKAGE.pkg | ||
'''7th step''' – Disabling “Product Mode” | '''7th step''' – Disabling “Product Mode” | ||
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# ps3dm_um /dev/ps3dmproxy write_eprom 0x48C07 0xff | # ps3dm_um /dev/ps3dmproxy write_eprom 0x48C07 0xff | ||
'''This step is really important, if | '''This step is really important, if Produc Mode isn´t disabled you will need a dongle to get out of it''' | ||
= | |||
= '''ALTERNATIVE METHOD - not tested''' = | |||
'''1st step''' – Enabling product mode | '''1st step''' – Enabling product mode | ||
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---- | ---- | ||
The returned value | The returned value shouldn’t be 0xff. | ||
# ps3dm_um /dev/ps3dmproxy read_eprom 0x48C07 | # ps3dm_um /dev/ps3dmproxy read_eprom 0x48C07 | ||
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'''4th step''' - Install CORE_OS_PACKAGE.pkg | '''4th step''' - Install CORE_OS_PACKAGE.pkg | ||
---- | ---- | ||
ps3dm_um /dev/ps3dmproxy update_pkg 1 0x9 CORE_OS_PACKAGE.pkg | ps3dm_um /dev/ps3dmproxy update_pkg 1 0x9 CORE_OS_PACKAGE.pkg | ||
'''5th step''' – Disabling “Product Mode” | '''5th step''' – Disabling “Product Mode” | ||
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# ps3dm_um /dev/ps3dmproxy write_eprom 0x48C07 0xff | # ps3dm_um /dev/ps3dmproxy write_eprom 0x48C07 0xff | ||
'''This step is really important, if | '''This step is really important, if Produc Mode isn´t disabled you will need a dongle to get out of it''' | ||
=Install debug firmware= | |||
'''High brick risk! Don´t try this if you don´t know what you are doing''' | |||
'''If you brick with this the only way to recover is with a nor flasher and a proper backup''' | |||
'''To install debug firmware, te proper syscon eeprom flags should be set http://www.ps3devwiki.com/index.php?title=Hypervisor_Reverse_Engineering#EEPROM_Offset_Table and EID0 should be resigned and rehashed with the proper target id ''' | |||
or | |||
''' You could use the data from a debug EID0 ''' | |||
Debugging Station Target ID: 0x82 | |||
eEID contains | |||
*system model data | |||
*target ID | |||
*PS3 motherboard revision | |||
Other target IDs (might be helpful if someone messes this up) | |||
==Targets IDs == | |||
* 81 = reference tool | |||
* 82 = debugging station | |||
* 83 = japan | |||
* 84 = USA | |||
* 85 = Europe | |||
* 86 = Korea | |||
* 87 = UK | |||
* 88 = Mexico | |||
* 89 = Australia/New Zealand | |||
* 8A = South Asia (Asia except China, Japan and Taiwan), | |||
* 8B = Taiwan | |||
* 8C = Russia | |||
* 8D = China | |||
"The kernel checks the target id to see if your unit is debug or not and if not it disables all the fancy things such as running unsigned code. So what you want to do is to change 8x into 81 or 82 but this implies resigning the EID section (or at least decrypting the per ps3 encryption from '''a debug EID target key and reaplying onto a retail''')" ;o) | |||
* a good read about SC http://rms.dukio.com/?p=16 | |||