Editing Downgrading with linux

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* This works on FW 3.55 without a physical dongle.
'''You should have grafchokolos modules, and patches installed'''
* You should have graf_chokolo's modules, and patches installed.
 
* Use this method to install a lower firmware.
'''This works on 3.55 without a fisical dongle'''
* Thanks to graf_chokolo for bringing Linux on PS3, with all its 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 ID.
You need a dongle id.
Valid range for dongle IDs is 0×0000 – 0xffff. So choose one, it does not matter which one, but some are revoked !!!
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 should not be 0xff.
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 isn't damaged
'''5th step''' - Inspect if CORE_OS_PACKAGE.pkg isn´t damaged
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ps3dm_um /dev/ps3dmproxy inspect_pkg 1 0x9 CORE_OS_PACKAGE.pkg
ps3dm_um /dev/ps3dmproxy inspect_pkg 1 0x9 CORE_OS_PACKAGE.pkg


'''6th step''' - Install CORE_OS_PACKAGE.pkg
'''6th step''' - Install coreOS pkg
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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 Product Mode is not disabled you will need a dongle to get out of it'''


= Alternative Downgrade Method - tested and not working =
 
== '''ALTERNATIVE METHOD - WARNING NOT TESTED''' ==


'''1st step''' – Enabling product mode
'''1st step''' – Enabling product mode
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The returned value should not be 0xff.
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 Product Mode is not disabled you will need a dongle to get out of it'''
{{Linux}}<noinclude>[[Category:Main]][[Category:OtherOS]]</noinclude>
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