Hacking Restore r4i gold cart after b9s?

[FRITZINATOR]

Recently followed the guide to homebrew a friends 3ds and forgot to make a back up of the r4i cart. Is there a file/guide to restore the r4i sp oys usable again? It's been about 7 months since I did this last and I remember there was a way to not destroy a working cart.
Thanks for the help in advance!

 

[zfreeman]

Could you post a picture of the cartridge?

 

[FRITZINATOR]

Here it is

 

[zfreeman]

https://3ds.hacks.guide/installing-boot9strap-(ntrboot)

Section V - Removing ntrboot
If you do not know which HW revision you have, just try each for your cart of them. Only the correct one will allow your flashcart to launch properly from home menu, but flashing the wrong one will not brick the cart

Torrent a backup.bin and flash it to the cartridge using the Luma payload 'ntrboot_flasher.firm'.