So I understand that downgrading supposedly kills blu-ray, and to restore it one must have a blu-ray drive on PC or install Linux on PS3. Not an option for me.
But what if I instead, UPGRADE to 3.55 and jailbreak at that point? Do I STILL kill my blu-ray? My current firmware is 3.42.
Also, if I do upgrade to 3.55, can I upgrade directly into the jailbroken 3.55 or do I have to install the OFFICIAL 3.55, and THEN jailbreak it?