Hi, this happens to me too.. :-/ I want to transfer UMS to MTP and it gives me also this warning message. Where can I download in these days firmware for UMS players? There are not links to download on iRiver web site.. :-/ I can not find any UMS firmware..
I have got one other problem. I have 2 horizontal lines of not functional pixels. It showed me these lines after maybe 1 month from reflashing to 1.70 UMS firmware. May I fix it with reflash firmware? How do I reflash firmware (I have 1.70 UMS now) 1.70 UMS > 1.70 UMS or 1.70 UMS > older one?
Many thanx for help
cebek