PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
PSP Custom Firmware 6.00-6.61
Preparing My PSP GO For Infinity 2.0 Update! (6.61 PRO C2) - YouTube
Custom Firmware with PRO | ReviveToday
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
PSP Custom Firmware 6.00-6.61
Downloaded CFW 6.61 PRO-C2 got this message : r/PSP
PSP Custom Firmware 6.00-6.61
How To Update Your PSP TO 6.61 Official Firmware in 2021 - YouTube
So I downloaded the 6.61 update and when I try to install it it displays this error and I don't have a custom firmware so If anyone know how to solve this