Firmware upgrades are very important and will help with stability of the system as well as upgrade playback options and add other features. You can find the latest firmware here: Sony Play Station 3 firmware update.
For this guide there are a few requirements, all of which you should own or you would not be looking here. A storage media device, either a USB flash drive or a Memory Stick, SD Memory Card, or Compact Flash card.
Select Update via Storage Media and the system will search the drive for the PUP file.
PUP file downloaded from the Playstation System Software site to update my PS3? Because it has attracted low-quality or spam answers that had to be removed, posting an answer now requires 10 reputation on this site (the association bonus does not count).
Copying it to the root of a USB flash drive doesn't seem sufficient. Would you like to answer one of these unanswered questions instead?
Users must then boot up the Play Station 3 in safe mode and load the update onto it manually.
Sony’s full instructions on how to install firmware update 4.46 can be found below.