I've had my 6gb H10 for a while now and love it, however last night I wanted to take a sledgehammer to it. Out of no where it started playing up, and the standard do the ums trick/drop files/easy h10 to refresh db failed to re-organise my tracks via track number.
No matter what I did, easy h10 would quit halfway through so the db would not be rebuilt. EasyH10 was fine, it was something else. So I reformatted the HD, stuck the 2.51 firmware back on, upped my 4gb of tracks to run into the same problem again. Forgot to backup the font file too so now its reverted to the old iriver font lol.
So right now my tracks have been reorganised for track number via Easyh10 and things are partially back to normal. However certain albums just show the STOP symbol if I try to play them - and those albums are mysteriously empty when I check them via the browser. However if I reinsert the battery to reset the h10, then sometimes they re-appear and play fine?
The problem just above is been happening for sometime now and I've found no way around it, so I've been looking at a 2-4gb flash based player now, I had no hassle with those. Shame really because I love my h10
As a last resort I'll use the wiki to do a UMS/MTP conversion too, prolly soon.
http://iriver.wikia.com/wiki/Main_Page