TST Mode (Recommended)

1. Connect VIM2 to PC with a USB-C cable.
2. Quickly press the Function key 3 times in 2 seconds, then release the key. You will see the Power LED (Blue) blink for about 3 seconds.
3. After the Power LED (Blue) turns OFF, this indicates that the board is in Upgrade Mode (Maskrom Mode).

Key Mode

1. Power on VIM2.
2. Long press the POWER key without releasing it.
3. Short press the Reset key and release it.
4. Count for 2 to 3 seconds, then release the POWER key to enter into Upgrade Mode. You will see the sys-led turn ON when you’ve entered Upgrade Mode.

Serial Mode

1. Connect VIM1 to PC with a USB-C cable.
2. Refer to Setup Serial Too to setup your Serial Tool for VIM1.
3. Once again, make sure you’ve done the correct connections and setup.
4. Hit SPACE on your keyboard at the moment of bootup to stop autoboot. This step will let VIM1 boot into U-Boot command line.
5. Type run update in the terminal of U-Boot. The Sys LED (White) will turn ON when you’ve entered Upgrade Mode.

MRegister Mode

1. Connect VIM2 to PC with a USB-C cable.
2. Use the tweezers to shourtcut the MRegiser pad.
3. Short press the Reset key to enter upgrade mode.

• MRegister location for V14 version board

• MRegister location for V12 version board