this is not my work i found it elsewhere i hope it helps you

Guide how to USB flash / upgrade a Technomate TM-2T.

Download your preferred image.
Format a USB stick FAT32 on your PC, leave the stick connected to your PC.
Power off your receiver.
Extract the rar or zip file and copy the complete update folder to the root of your USB stick.
Now check the file stucture on your USB stick. You should have update > tm2toe > cfe > image flash files inside the folder. Remove USB stick from PC and connect to receiver.
Power on the receiver, when you receiver the message on your TV screen press OK on the front panel.
Wait for the flashing process to complete, do not power off until the complete message is on your TV screen.
Once complete remove the USB stick, start repeatedly pressing EXIT button on front panel
and keep repeatedly pressing EXIT for 10 seconds after power on.