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 2020 Definitive Guide | How to install permanent custom firmware 6.61 PRO-C | Infinity 2 | ISO - YouTube
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
Psp 6.61 online hack. So im trying to cfw 6.61 with psp go with no usb and i got this can anyone help? I can upload file. : r/PSP
PSP Custom Firmware Guide For All Models 2023 - pspunk