How To Install PSP 6.60 PRO-C2 Custom Firmware! - YouTube
Hack, Install Custom Firmware on Sony PSP-E1004 Street
PSP - POPSloader 6.60 PRO (PS1 on PSP) | PSX-Place
Use 6.60 plugins on 6.61 ! - YouTube
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
Updating The PSP System Software to 6.60 / 6.61 - pspunk
How To Install 6.60 PRO-C Fix 3 using Infinity 2.0.3 Permanent Custom Firmware - YouTube
PSP Custom Firmware Guide For All Models 2023 - pspunk
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
PSP Custom Firmware 6.00-6.61
How To Upgrade to PSP 6.60 PRO-C2 Custom Firmware [2021] - YouTube
The final Patch for the OEM PSP firmware. Good to have link handy before you patch to a CFW version. | Firmware, Psp, Nintendo wii