I recently fixed my old Fat PS3 from the YLOD, Everything worked fine except the blu ray drive. I couldn't put disks inside of it (Something was blocking it) but the blue light still turned on. So the Blu ray drive is the problem (Most likely). But I don't know what the problem is exactly.
Any ideas guys?
Update. I tried updating again holding the ribbon that connects the drive to the ps3 in place, this time it made it to 99 Percent. Stayed there for like 2 minutes and then I got the same error.