HDD Problem After Downgrade
After downgrading my ps3 from firmware 3.41 to 3.15, which i had bricked due to my laziness, i was unable to exist service mode (i tried placing the second Lv2diag.self file on two different flash drives which i plugged into the rightmost usb port). So i decided to use psgrade again and used the modified 3.41 ps3updat.pup insteed. Sadly i was still unable to exit service mode. I also tired entering the recovery menu and even attempted downgrading to another firmware but both did not work. My ps3 did still turn on but was stuck in factory/service mode. I figured zero-filling the harddrive would help, but after placing it back into my ps3 the green light turns on for a few seconds then turns off.
I've been using a nano 1g to downgrade, and i have a ps3 slim.
Any suggestions on what to do? :(