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 Custom Firmware 5.00 M33 is Released
How to Upgrade PSP from 3.90 M33 to 5.00 M33 - YouTube
Windows XP PSP Theme for 5.00m33 | We Have Moved to AllTechRelated.com
PSP Release: Despertar Del Cementerio 9.00, with PSP 3000 03g and TA-088v3 compatibility. Bring your PSP back from the dead. - Wololo.net
PSP - Custom Firmware 5.00 M33-6 Released | Exophase Forums
Yoti on X: "PSP-3000 5.00 M33 to 4.20 OFW https://t.co/stUKRaslkG" / X
Help me with a softbricked psp (5.00 m33-6), please!!! : r/PSP
PSP Release: Despertar Del Cementerio 9.01 (PSP unbricker) - Wololo.net
downgrade 5.50 and 5.51 to 5.00 m33 (to play free psp games) - video Dailymotion
5.00 M33 (Anyway to stay on this firmware and run 6.60 games) | GBAtemp.net - The Independent Video Game Community
PSP-1000 Series/Custom Firmware for Sale in San Gabriel, CA - OfferUp
Should I update my psp-1000 on 5.00 m33-4 : r/psphacks