Dug out my childhood PSP 1003, Running 4.01 M33 -2 with 1.50 Kernal Addon. Still got my Pandora and MMS! Is this worth modernising? : r/PSP
Custom firmware 5.00 M33 released for PSP | Tech Ticker
Setting Up & Talking About Pandora's Battery: The Legendary PSP 1000/2000 Unbricker - YouTube
Here's my PSPs, top i bought back in 2008 modded and still on 5.00m33-6 but it's missing the kratos battery cover the other my brother got it for me for xmas this
PSP: Updating from the 3.xx OE CFWs to the 6.60 ME CFW - YouTube