Cannot update The PS4 could not update the system software using a USB storage device. Go to [Settings] > [System Software Update] to update your PS4. If that’s not possible, follow these steps: Make sure that your USB storage device is formatted as FAT or exFAT. Insert the USB storage device into your PC/Mac USB, right click and select ‘Format’ to open the dialog box. Select FAT or exFAT from the drop down menu under ‘File system’.