I'm having some problems downgrading my EUR N3DS. I've tried three times so far on 10.3, 10.6 and 10.7 and every time sysupdater says it's successful but I get the "error has occured" message when booting and am forced to go into recovery mode and update (hence the different firmware attempts). I've done a bit of googling and apparently some N3DS models just refuse to downgrade properly without formatting them first. I really don't want to format mine as I'd rather not lose the unrecoverable data. Has anyone managed to get around this problem without formatting? Or has the root cause been discovered to attempt to bypass it? Some background info on my N3DS to, hopefully, pinpoint what's holding up the downgrade process: Launch edition N3DS. System transferred from ambassador O3DS. Ambassador GBA VC titles and a few DSi titles installed.