Help on removing and reinstalling a shutdown script

[leboucheralex]

Hi everyone, i'm completely a noob at programming etc,
but i need help with re-installing a shutdown script. On my previous SD card (rp3b), i had a shutdown/turn on button working well (thanks to a great tutorial).
But Then i installed a pre made image on another SD Card that had already the shut down script utility installed (available from the retropie menu to enable/disable it). The button had to be at Gpio 5 and 6 (same as the tutorial i previously did).
But the Shutdown button does not work. (i did enable it in the Retropie menu)

Is there a way to uninstall/remove/erase the script from retropie or from the command line and/or remove the "shut down utility" from the retropie menu?
Then i was thinking to redo the tutorial and reinstall the script. Thanks for your help :)

[mitu]

@leboucheralex We don't support 3rd party images - start with the image from retropie.org.uk/download and then you can re-do the installation steps from the tutorial.

[leboucheralex]

@mitu
Ho right, 3rd party! Yes that sound fair.
Ok thanks!