Even a routine update can fail. Here are the most common errors associated with the and how to fix them.
The download was interrupted or the file is corrupted. Solution: Delete the update file from the PS3’s internal storage (under Network > Download Management). Restart the update process via USB method using a freshly downloaded PS3UPDAT.PUP . playstation 3 system software update 4.88 download
Ensure folders are exactly "PS3" and "UPDATE." Even a routine update can fail
If your PS3’s Wi-Fi card is weak, you prefer a physical backup, or you need to update multiple consoles, use a USB drive. Sony provides the (named PS3UPDAT.PUP ) on their official servers. you prefer a physical backup