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,
Guide How to UPDATE to Latest Firmware 6.61 For PSP and How to Fix Error Update 9.90 | Guide How to UPDATE to Latest Firmware 6.61 For PSP and How to Fix
Install PSP 6.61 Pro-C Infinity Custom Firmware | GBAtemp.net - The Independent Video Game Community