If you didn’t already know, having a custom opening_plugin.rco (coldboot) will cause POPS (PSX) games to run improperly. Here’s a solution to that.

This deals with the PSP’s flash! Be very careful as there is a small chance that you may brick your PSP!

First, make sure you have at least 75% battery power. You may also want to have your charger plugged in.

Create a backup of your original “game_plugin.prx” in vsh/nodule and “opening_plugin.rco” in vsh/resource.

You will need a decrypted game_plugin.prx of your PSP’s current firmware. You can obtain that by using PSAR Dumper. Open up the decrypted game_plugin.prx with a Hex editor and search for flash0:/vsh/resource/opening_plugin.rco. Change it to flash0:/vsh/resource/0pening_plugin.rco (that’s a zero, not a capital O).

Get your original opening_plugin.rco and rename it 0pening_plugin.rco (again, that’s a zero, not a capital O).

Flash your new game_plugin.prx to vsh/nodule.
Flash 0pening_plugin.rco to vsh/resource.

You should now have:

• flash0:/vsh/nodule/game_plugin.prx
• flash0:/vsh/resource/opening_plugin.rco <— the custom one
• flash0:/vsh/resource/0pening_plugin.rco <— the original one