MTP works for me. When you connect it there shoul be a notification saying you are charging, where you can switch between the modes. You can check different cables, but it should work on this ROM. Might be a problem with your device, as it works in TWRP too, iirc.fresh install, wiped everything...
no mtp detected? it charges and everything seems to work fine but no option to pick mtp for data transfer and the entire menu is greyed out like it does not recognize that its pluged in to a computer.
odin still findsthe s5m in download mode so its not the cable or the device.
however the above twrp also does not have mtp for file transfer..
is this just a me issue with this device?