Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
Sony Updates Its PSP Console with Firmware 6.61 – Download Links Available
Wireless PSP Custom Firmware installation is now possible! - Wololo.net
PSP 5.50 Firmware Update Download Available Now
Sony updates firmware on PSP to v2.1 - CNET
PSP update: 6.61, firmware, PlayStation
4 Ways to Upgrade Your PSP Firmware - wikiHow
4 Ways to Upgrade Your PSP Firmware - wikiHow
Updating The PSP System Software to 6.60 / 6.61 - pspunk
4 Ways to Upgrade Your PSP Firmware - wikiHow
4 Ways to Upgrade Your PSP Firmware - wikiHow
How to Update Your PSP Firmware
How To Update Your PSP TO 6.61 Official Firmware in 2021 - YouTube
PSP 6.61 Infinity PRO Custom Firmware Tutorial! (Permanent CFW) 2018! - YouTube
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
PSP Firmware 6.35 Now Live, Adds Capability for Unlimited Cloud Music Service via Qriocity - SonyRumors
How To Update Any PSP To Official 6.61 In 2018! - YouTube
PSA: PSP firmware 6.20 now available for download – Destructoid
PSP Firmware Update (v6.10) – PlayStation.Blog
PRO Firmware PSP - GameBrew
PSP Official Firmware | ReviveToday
PSP Firmware Update 6.61 | GBAtemp.net - The Independent Video Game Community
4 Ways to Upgrade Your PSP Firmware - wikiHow
PSP firmware 3.0 out in the wild | Engadget
PSP 6.61 Custom Firmware Install on any PSP - PSP, PSP Slim, PSP 3000, PSP Go & E1000 | Digiex
Proto:PlayStation Portable - The Cutting Room Floor
Updating The PSP System Software to 6.60 / 6.61 - pspunk
:max_bytes(150000):strip_icc()/psp---sony-playstation-portable-console-534194895-5ba7b4ee4cedfd0025962aa2.jpg "PSP FAQ - How Do I Update My PSP Firmware?")