ok well i got about the same problem as you Pro.Hack downgraded to 3.55 from 4.0 was messing around and it got bricket. dont have the bios of 3.55 but do of 4.0 now trying to follow ur method to get it back seems to be going good till the last part where you switch the switches to 000001 as soon as i switch the first switch ps3 shuts off..
any help would be great.