But until you fix it, it will continue to loop in update mode. It can be the disc insertion sensor, the main ribbon cable or simply a loose connection.

Generally if it stalls in the 60-70 range, this indicates a problem with the BluRay (even a dirty lens or bad diode) player in some way. Depending on where in this process it stalls (in the loop % of completion), can indicate where the possible failure is. If it finds one, then you'll get that 8002F14E code (or similar) and it won't complete until you fix the hardware problem it found. Your PS3 is checking your entire system hardware for faults. The Nand (one adjacent to Super Companion/south bridge) has NOT been flashed until this phase is complete. What's happening is that the PS3 is running in Nand flash mode. But the actual flashing of PS3's Nand doesn't complete until it reaches 100% and reboots. In case it's related to this update process. This is why Sony wants you to send in your hard drive with your PS3 for repairs.

If you do, it could keep it from ever finishing that update. Whatever you do don't format the hard drive you used in the Update Flashing of your PS3 if it's looping. Recheck all connections and cables and/or re-seating your hard drive.

It could be simply locked in an update loop.

Custom firmware ps3 old fat 2016