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i got a psp 1000 model, 6.61 OFW, is it possible to put the CFW 5.00 m33 firmware on it (due to compatibility snes9x, my other fat works perfectly with that one, this psp freezes whenever I start a game/emu after running PROUPDATE, also the buttons are pressed automatically)?

I ran the 6.61PRO-c2 version, and did not make a permanent flash yet. is it possible to run PROUPDATE and then downgrade it to 5.00 m33-6 ? using a CFW from (*2)?

i found a list of OFWs (these are 14+ MB):
http://darthsternie.bplaced.com/psp.html

and CFWs and other tools (just 200 kb? is that correct?) (*2):
https://nzxtrules.stackstorage.com/s/hwF7FYtOs8EmoJG

what are the steps to proceed (without pandora)?

is it possible with hellcat?

thank you.

Easy is U have PSP 100x up to some 200x Pandora work . U have PRO-C2 CFW so simple:

Download PSP Tool - run it on CFW
Make in it MMS+Pandora (Soft moded pandora batterY) witch 5.00M33CFW and install and done

U can always install from 5.00M33 the 6.61OFW and 6.61CFW and always disable pandora to normal battery visa PSP Tool

https://www.youtube.com/watch?v=2s18WiuOQTU


I do That may Times on my full hacable 1x1004 and 2x2003/4 PSP - Only of corse not work on any 300x-E100x PSP

But u have 100x PSP its all fully Pandora makable