0okm's PSP Firmware v2.8 downdater to v2.71 for TA 079-086 Released!

0okm has released a new v2.8 to v2.71 downgrader for TA079-086 PSP consoles . This downgrader carries some HUGE WARNINGS and therefore, if you chose to go ahead with this app, it is at your risk.

Quote:

To sacrifice yourself. Experimental. Extremely dangerous. No warranty. Use on your own risk and responsibility. Anything may happen. We recommend you to avoid seeing/downloading/using this. Emergency exit -> http://www.playstation.jp/psp/ * this CAUTION copy from SEC(nem) If you don't know HowTo use, DON'T use it !!! It may brick your psp , Use it at your own Risk !!!

HowTo


1. on FW1.50PSP
　Download PSARDumper PSAR-Dumpa---ASB--.rar

　Download PSP FW2.71 Updates EBOOT.BPB 2_71_US_firmware_update.rar

　Download PBP Unpacker pbp-unpacker-094-setup.exe

　use PBP Unpacker to unpacker FW2.71 EBOOT.BPB
　copy FW2.71 DATA.PSAR to ms0:\
　run PSARDumper on FW1.50PSP
　then "Press circle to dump encrypted without sigcheck and decrypted reboot.bin."
　to Dump "FW2.71 File"

2. on FW2.80PSP
　Extract FW280DownDate2FW271.zip to ms0:\
　check ms0:\F0 have 286 files and total size is... [Read More ]