I need some help with my little situation... Trying to CFW a friends 2DS and at the SafeA9LHInstaller stage realised the start and select buttons do not work at all... I can't progress forward so wanted to restore the nand backup so he can return the 2DS for a refund. So... Downgraded to 2.1.0 using CTRTransfer. Can't install A9LH. Want to restore NAND.