I was on rogero 4.46 cfw, then I downgraded to 3.55 with rogero downgrader 999, and now im stuck on rogero 3.55 downgrader cfw. and everytime I try and upgrade to rebug 4.46 or even 3.55 it says corrupted, any help would be great! thanks.

Put your PS3 into recovery mode then update, just remember to take any game out of your PS3 first!