Cannot read exFat formatted hdd

Hi all,

I got myself the new Xiaomi Box, cracked with VST and TOGIC featuring loads of awesome movies and tv shows (I live in China).

Only problem is that the only filesystem the box can read from my connected external HDD is FAT32. When I format as exFat it turns up labeled EFI with no visible files on it.

Does anyone know how to fix this issue?