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,
CARA UPDATE PSP DI TAHUN 2022 || 3.95 OFW ➡️ CFW 6.61 infinity pro c - YouTube
PSP Custom Firmware Guide For All Models 2023 - pspunk
PSP Infinity 2.0 Install Guide! (6.61 - 6.60) (WORKING ON EVERY PSP) - YouTube
Infinity 2.0 released for the PSP, allows for persistent CFW on all models of PSPs on 6.60 and 6.61 | GBAtemp.net - The Independent Video Game Community