Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
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,
Davee's Infinity CFW - Permanent 6.61 CFW on All 3000 & Go Models! | GBAtemp.net - The Independent Video Game Community
PSP 3000/goを含む全てのモデルに対応した、再起動後も改造状態が維持される「6.61 Infinity」リリース [導入方法] | Kotyan Life
How to Permanently Mod EVERY PSP in 2022 - Install/Update INFINITY 2.0 & 6.61 PRO-C2 Custom Firmware - YouTube