Picked up a PSP-1000 on firmware 1.0. Any reason to NOT be on 6.61? : r/PSP
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
How To Downgrade PSP 6.61 To 6.60! (Chronoswitch Downgrader) 2017! - YouTube
Release: Infinity 2.0 – Enables Permanent 6.6x Custom Firmware for all PSPs! - Wololo.net
PSP FW 6.61 Downgrader - Hackinformer Forum
I was trying to downgrade my PSP go to 6.20, but it warned me that the [Resume game] feature would be deleted. Does that mean I won't be able to use the
PSP 6.61 Infinity Hybrid Firmware by Davee, LME & PRO CFW Patch | PSXHAX - PSXHACKS
How to Mod Any PSP on Firmware 6.61 or Lower! - Infinity 2.0 Permanent CFW - The GamePad Gamer
PSP: First hacks for the new Firmware 6.61 - PRO CFW & Downgrader updated! - Wololo.net
How to Downgrade any PSP on 6.60 - YouTube
Console info - How To Easy Jailbreak Any PSP 6.61 CFW Permanent. Tools : - 6.61 PRO C2 - infinity-2.0.3 Video Tutorial : https://youtu.be/l7-lmtrVbJo | Facebook
Psp Filer 6.61 Free Download
I need an expert's advice. I bought this PSP and I want to hack it. The problem is I'm not sure if I can downgrade this firmware since its a permanent csw?
Davee releases new Chronoswitch Downgrader for the PSP - Hackinformer
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive
4 Ways to Upgrade Your PSP Firmware - wikiHow
4 Ways to Upgrade Your PSP Firmware - wikiHow
How to downgrade your PSP Firmware with Chronoswitch - Darthsternie's Firmware Archive