I had the same problem with my fates special edition... My 3ds crashed mid setup and i was in frankenfirmware. What i did was went and got a copy of shovel knight and updated using the cartridge which upgraded my fake 9.2 system to 9.8. After that i reseted my whole mircosd and restarted the...
although i ended up accidentally changing my nand with no way of going back bc i didn't know you needed a gamecube controller to restore it (i have a wii minus/1.1, which doesn't have gamecube controller support)
and if i find the sd card i have my NAND backed up on, i can not only restore the NAND if i solder the right part in, but i can also put my NAND on dolphin, then i can play dolphin online, like PMEX Remix or MKWii Riibalanced