Maybe we can find something interesting while analysing the differences inside the both firmware.

Here a quick comparison of the uncompressed PUP and a way to begin to search and compare :

- updater.sce The begining is identical
Code:
Identicals

vsh.tar
BDIT_FIRMWARE_PACKAGE
BDPT_FIRMWARE_PACKAGE_301R
BDPT_FIRMWARE_PACKAGE_302R
BDPT_FIRMWARE_PACKAGE_303R
CORE_OS_PACKAGE
RL_FOR_PACKAGE
RL_FOR_PROGRAM
Code:
Not identicals

BLUETOOTH_FIRMWARE
dev_flash_000.tar..
dev_flash_001.tar..
dev_flash_002.tar..
dev_flash_003.tar..
dev_flash_004.tar..
dev_flash_005.tar..
dev_flash_006.tar..
dev_flash_007.tar..
dev_flash_008.tar..
MULTI_CARD_FIRMWARE
SYS_CON_FIRMWARE_01000005
SYS_CON_FIRMWARE_01010302
UPL.xml.pkg
Code:
Not Presents (on Debug PUP)

dev_flash_009.tar..
dev_flash_010.tar..
dev_flash_011.tar..
You are welcome to Post here the results of your search and founds, and maybe give a take-off to the Ps3 Scene