Hello in here am having serious issue on my ps3 i tried downgrading from rogero firmware aiming to install rebug firmware. i tried the downgrade tutorial but ok on 3.55 rogero i tried to update to rebug but said data corrupted so i tried rebooting so i could try again suddenly my system ran into factory/service mode. i tried all i know no way out so when i tried to put it in recovery mode it just booth and shut down on it own after some few seconds, presently now my ps3 is still on starting and shutting down on it own.
Turn off the PS3 if it is on. Plug the flash drive into the USB port on the front of the PS3 Slim that is closest to the disc drive.
Turn on the PS3 Slim. The PS3 will turn on and then turn back off after about 10 seconds. You can then remove the flash drive and turn the machine back on; it will no longer be in Factory Service Mode.