1. Dos-Mode

Please follow the steps to update BIOS :

Step 1: create a bootable disk.
Step 2: decompress the tm290d_120B.zip file to this bootable disk 
Step 3: insert the bootable disk into your system, then boot.
Step 4: execute *.BAT file


2. Window-mode

Please follow the steps to update BIOS :

1. Download winflash_tm290d_v1.20b.zip and unzip it .
2. Execute InsydeFlash.exe file and it will load BIOS automatically.