PSP update: 6.61, firmware, PlayStation
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
RG351P 3.7 Firmware Update – Improved PSP Performance! – Retro Game Corps
Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
PSP update: 6.61, firmware, PlayStation
How To Update Your PSP TO 6.61 Official Firmware in 2021 - YouTube
System Update
4 Ways to Upgrade Your PSP Firmware - wikiHow
Sony PSP system firmware 2.0 update instructions? - Ask Dave Taylor
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
PSP firmware 3.90 says 'Hello' | Engadget
PSP firmware 5.50 adds Information Board, internet security and more
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
Wireless PSP Custom Firmware installation is now possible! - Wololo.net
4 Ways to Upgrade Your PSP Firmware - wikiHow
PS3 and PSP firmware updates available for download | Tech Ticker
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
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PSP FAQ - How Do I Update My PSP Firmware?
Playstation Portable (PSP) softmod - Dreamcast.nu
PSP Custom Firmware Guide For All Models 2022 - pspunk
4 Ways to Upgrade Your PSP Firmware - wikiHow
Download PSP 5.50 Firmware Update
