Hi there, I just bought a refurbished T10 MTP with firmware v1.54 and I got exactly the same problem as you that T10 turns off while upgrading the firmware.
After browsing this forum I found many user had upgrade issue on older firmwares. So I tried to downgrade my firmware and upgrade it again which worked out.
Here is what I did,
I downloaded v1.53 firmware from iriver website
http://www.iriver.com/html/support/d...ew.asp?idx=712
put all uzipped 1.53 files into 'data' folder my T10
unplugged USB connection of T10 to downgrade to v1.53
After the firmware changed v1.53, I can use the official 'iriver firmware updater' to update to newer firmware.
Note: even though the updater show it's updating to v1.70, it actually upadate to v1.63 first and I had to update it again to v1.70
Hope this will help ppl with v1.54 firmware problem
