PSP FAQ - How Do I Update My PSP Firmware?

There are a few different ways to update your PSP's firmware. We breakdown all the ways to update your firmware here to save you time.

Anybody know if i should keep my psp on version 3.80? : r/PSP

PSP FAQ - How Do I Update My PSP Firmware?

Beginner's Guide To PSP v6, PDF, Play Station

I found my old Psp, should I update it to jailbreak it or will it work on old firmware ? : r/psphacks

Install or use custom firmware on any 6.39 PSP [PSP, PSP Slim, PSP 3000, PSP Go]

Sony PSP 3000 review: Sony PSP 3000 - CNET

Dummy's Guide to Installing Custom firmware on a PSP

New PSP Firmware Expands Internet Radio Feature

What is the best way to update a PSP via USB? - Quora

PSPgo May Not Have Every PSP Game - Game Informer

Playstation Portable (PSP) 101: A Beginner's Guide - RetroGaming with Racketboy

Help! Trying to update my PSP-1000 to latest 6.61 FW : r/PSP

PSP & PS Vita Owners Shouldn't Update Their PS3 Firmware

Mod a PSP, Super Easy