Restore / Debrick your Pandora Games 3D

It’s happened to all of us; we’ve fiddled with it a little too much, something went boom and now it’s not working as it was before..

…this can happen to your Pandora Games 3D quite regularly and if you ever find that it boots up, plays the boot video and then shows a black screen, this is how to restore your system to factory settings:

This is, of course, assuming that you have backed up your system using the methods described here and here.

Note: if you find that your system boots with absolutely no video output via VGA or HDMI, try to additionally restore your misc, logo, mtblock0 and mtblock1 partitions. This should reset your video controller settings.