1. Dos-Mode Please follow the steps to update BIOS : Step 1: create a bootable disk. Step 2: decompress the tm290e_120.zip 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 tm290e_winflash_bios v1.20.zip and unzip it . 2. Execute TM290EFLASHIT.exe file and it will load BIOS automatically.