What do I do if the system software update on PS4 fails?
If the system software update on your PS4 console is stuck, restart the update. If that fails, download the update file below to a USB drive and follow the instructions below. Using a PC or Mac, create a folder named "PS4" on a USB drive formatted as FAT32. Inside that folder, create another folder named "UPDATE".
When will the system software for PlayStation 4 consoles be updated?
An update to the system software for PlayStation 4 consoles was released on 04/14/2021. Always update your PS4™ console to the latest version of the system software.
How to update games on PS4?
Select the application you want to update in the main menu. After turning on the PS4 and accessing your account, use the D-pad or left thumbstick to navigate to the game you’re interested in updating.  Check for updates through the options menu. With the game you want to update still selected, press the options button on your controller.
How do I Reset my PS4 to factory settings?
Start the PS4 console in Safe Mode: press and hold the power button, releasing after the second beep. Select Safe Mode option 7: Reinstall System Software. Select Update from USB Storage Device > OK. If your PS4 console does not recognize the file, check that the folder names and file name are correct.