Please be sure to update the M3i to Core 2.0.2 to support 3DS new firmware Ver. 2.0.0-2U/E/J
If you have SD card compatibility issue on 3DS, try to use M3GUpdaterPlus_142.nds to upgrade with compatible SD card or on NDS/NDSi to complete.
Source: http://www.oz3ds.com/
If you have SD card compatibility issue on 3DS, try to use M3GUpdaterPlus_142.nds to upgrade with compatible SD card or on NDS/NDSi to complete.
Source: http://www.oz3ds.com/
