system version 4.21 loading
  • my ps3 won't update system 4.21 and it displays error code 8002F997
  • Things cropping up like this are why i linked to Sony's own error code look up in one of the pinned threads. ;)

    According to that they suggest rebooting the system and try again with downloading/ installing the update. If the download direct to the PS3 won't work, try downloading to a USB drive from Sony's site. If your system refuses to update using either method you would have to contact Sony about repairs.