Background: I have a fat PS3 which came with an 80GB HDD. I bought a new 500GB HDD so that I could store more games from PS Plus on it.
I followed the official instructions on Sony's website, but encountered something unexpected: it could not find the most updated version of the OS after installing the new HDD. I followed the on-screen instructions and pressed START + SELECT simultaneously to load the PS3/UPDATE/PS3UPDAT.PUP file from my SD card.
After the PS3 read the update, it seemed to be stuck at 99%. I waited at least an hour, and it was still stuck. Googling this problem, it appears that this is common with update 4.55.
Rather than wait even longer, I decided to reboot. The system prompts you to press the PS button on the controller, and then it asks to press START + SELECT again. After that, it installs the system update but gets stuck again at 99%.
Question: How can this fixed?