Luckily I do have a 10.3 backup from when I had to restore NNID functionality, so that's not too bad. If there are no better ideas I'll do this.Launch HomebrewLauncher on your SysNAND, use EmuNAND9Tool to put a backup of your 10.3 EmuNAND on your SD card.
Advice : Always make a backup before doing something who may touch the system...
download a newer build of RxTools, the newer builds support 10.4Do I need to update RxTools or something? I followed a guide (that I now can't find, of course) but I don't think the version I used was a nightly or anything. Any help? (I use an Old 3DS)
Thanks.
i just updated my emunand to 10.4 and all works perfectly in old 3ds with rxtools 3.0