Solutions for the stupid mistakes provied by MAxconsoles
These errors are generated by the hidden updater module sceChkDegeneration, used to detect a patched IdStorage on a TA-082
In order to help you guys out, here's a list of the errors so you can work out what needs to be done to fix your PSP.
DRNFFFFFFD8 = key 0x4 missing
DRNFFFFFFD7 = key 0x4 header is not "n y r B" (in hex: 6E 79 72 42)
DRNFFFFFFCE = key 0x5 missing
DRNFFFFFFCD = key 0x5 header is not "g k l C" (in hex: 67 6B 6C 43)
* to fix this, get KeyCleaner - then let it clean key 5, run it again and tell it to UNPATCH key 5
DRNFFFFFFC4 = key 0x6 missing
DRNFFFFFFC3 = key 0x6 header is not "r d D M" (in hex: 72 74 44 4D)
DRNFFFFFFB9 = key 0x7 header is not "D a P A" (in hex: 44 61 50 41) - ta-086+ only
DRNFFFFFFB0 = key 0x8 missing ta-086+ only
DRNFFFFFFAF = key 0x8 header is not "p D C L" (in hex: 70 44 43 4C) - ta-086+ only
* to fix this, get IdStorage Manager and click and change key 08 to
70 44 43 4C 01 00 00 00 0C 00 00 00 76 FC 19 C8 0A 00 19 00 10 00 0D 00 07 00 02 and all zeroes after that
CTA80000025 = region key (0x100) is damaged or missing (irrecoverable unless you have a backup)
Most of these problems can be fixed using the excellent KeyCleaner and IdStorage Manager by Chilly Willy.
Feel free to share other solutions here but do NOT upload the keys themselves as they are copyrighted data.
FFFFFFFE = critical error at the end of the update - flash1 related, try restoring default settings