Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
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Sony PSP Go Console Black Version 6.61 + Memory + 5 Games + USB Charger | eBay
Updating The PSP System Software to 6.60 / 6.61 - pspunk
Risen from the dead: PSP Firmware 6.61 is now available! - Wololo.net
PSP 6.61 How To Download & Install Games! - YouTube
PSP 2001 #4. Version 4.05 (will do the 6.00 upgrade and then to 6.61) and it needs TLC along with a display swap (has the same issue as my first one) with
Updating The PSP System Software to 6.60 / 6.61 - pspunk
Sony PSP Go Console Black Version 6.61 + Memory + 5 Games + USB Charger | eBay
PSP/PSP GO 6.61 Category Lite Plugin! (Organise Your Games) 2017! - YouTube
PSP Infinity 2.0 Install Guide! (6.61 - 6.60) (WORKING ON EVERY PSP) - YouTube
HOW TO GET FREE GAMES ON ALL PSP's VERSION 6.61 (WORKING 2020) - YouTube