I have a jailbroken PS3. After attempting the 4.87 update (I know, don't update), this is my boot up screen. Upon trying to fix this with the update on USB, I get “
How to download and install PS3 games without jailbreak via USB - YouTube
Jailbreak PS3 / PlayStation 3 with PSGroove | Redmond Pie
Northeast Jailbreak
How To Jailbreak Your PlayStation 3 (PS3) On firmware 4.90! - YouTube