A friend brought me a PS3 phat after his mate tried to jailbreak it without success. I don't know exaclty what he did or how, but I assume he used special jailbreak key to enable service mode and the his cfw freeze during installation. He told me that he turned off the console when the installation was frozen, so on reboot the screen was all black and the PS3 shutting down after half minute.
When I got it, I tried to enter service mode with the usual power button trick but no success. Then I formatted his HDD and when I turned it on, it went to the main service menu.
I formated the HDD and restore defaults. Still in service mode. Then I tried to update the ofw to 3.60 to test of the NAND is ok, and there I got an issue, while the installation seemd to be 100% on reboot.... black screen and nothing was wrorking again.
I tried reformat the HDD on the PC, no success
Tried to enter service mode with all the available tricks, no success
Tried the usb stick with the .info boot files, no success
I don't have jailbreak usb to try anything, and I wonder what else is left to try. Any ideas?
P.S. Someone says that removing the internal battery might reset the boot procedures and be able to exit service mode later. Should I open the PS3 and try?