I need updating

Hello all.
What is currently the latest and best set up to have on a PSP to allow to run most things and where can I get them from with simple instructions. Son hasnt bothered with it for a while so am a bit out of touch with it all now.
Was running v1.5 and v2 upto today when upgraded to v2.6 and have devhook v2 and fastloader v7. I know these are all now way behind hence the plea for assistance.

Thank you in advance for your help.

Ok, if your on 2.60 PSP, I suggest:

Update to sony firmware 2.80!
Email me for full downgrade pack!
Downgrade back to 1.5!
Then update to Custom Firmware 3.40 OE or 3.52 M33