PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
4 Ways to Upgrade Your PSP Firmware - wikiHow
Installing Custom Firmware on a PSP : 9 Steps - Instructables
I tried installing 6.61 PRO C2 and infinity v2.0.3 on my psp 3001 (following the instructions on the CFW guide of this subreddit) but it just shows corrupted data when I disconnect,
PSP Custom Firmware Guide For All Models 2022 - pspunk
PSP Go CFW Infinity installed but no PRO-C CFW. What would I do now? : r/PSP
PSP Custom Firmware Guide For All Models 2022 - pspunk
The 6.xx ME & LME Custom Firmwares for the PSP will receive yet another update in near future! - Wololo.net