(adsbygoogle = window.adsbygoogle || []).push({}); So i tried to downgrade my slim 4.50 OFW cech-2504a date code 0d i follow this guide You must login or register to view this content. i am stuck at the FSM method because i'm stuck at the update screen it says to put a 4.50 or higher update on a flashdrive and i tried this but i always get error : Data corrupted (8002F157) is there anyone that can help me with this? it would be much appreaciated

i allready have valid dumps from my console and i'm trying to put a wire from tristate to GND atm so we'll see...
Thanks to Libra7ry for helping me

so i connected the tristate to the gnd and now it stays on so i flashed it with my original bkpps3.bin , what do i do now?

ok so now i turned the ps3 off and put all the switches down and remove the cable from tristate to gnd, i turned the ps3 on and now i see Playstation 3 Factory/Service Mode in a red box in the down right corner, what do i do now?

Continue with the tut bro.
So now place the PUP file (dont forget to rename it) and Lv2diag.self on the root of the flash drive and place it on the right most port and turn on the PS3
files should be installing while the tv gives a black screen.
continue with the tut =0P

but i'm allready in factory service mode, they say the pup file and lv2diag is to enter the factory service mode and also i'm still on 4.50 OFW in there whenever i try and put those files in the ps3 i just boots up like normal in the factory service mode. i do the power +eject..