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
Davee teases Infinity 2.0 – Adds PSP E1000 support, provides bug fixes and other improvements! - Wololo.net
Radiant Red Psp Slim 3000 8gb Full Of Games ( Perma firmware ), Video Gaming, Video Game Consoles, PlayStation on Carousell
PSP Custom Firmware Guide For All Models 2022 - pspunk