Originally posted by ShakotanGX71
Reinstall firmware? If you changed only XMB type your targetid unchanged and you should use d-rex firmware.
But it could be problems with nor memory, because you have L model.
I'm only able to get into the Recovery Menu so would I just put a D-REX FW on my USB and update from that? And what do you mean a problem with my NOR memory?
Update: I put Rebug 4.76.1 D-REX on my USB and updated it from the recovery menu and it fixed the RSOD. Now I'm going to use the 999 Downgrader to go to 3.55 and install Rebug 4.76.1 REX + Cobra 7.1 on my PS3.