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 Release: Despertar Del Cementerio 9.01 (PSP unbricker) - Wololo.net
Despertar del Cementerio! – Unbricking PSP 3000 & the legendary 5.00 M33 CFW via Pandora! - YouTube
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
M33's CFW 5.00 M33-3 on PSP-2000 series | LifeDrive
Upgarde PSP CFW 5.00M33-6 to 5.50GEN-A to GEN-B - YouTube