There are many different ways to boot into upgrade mode. They are listed below:
- Button Mode
- Serial Mode
- TST Mode
- MRegister Mode
Usually, the first two methods will meet the needs of most users. However, in some cases, for example if you’ve burned the incorrect u-boot, or your device can’t even boot anymore, you can try out the MRegister mode.
- Power on VIM2.
- Long press the
Powerkey without releasing it.
- Short press the ‘Reset’ key and release it.
- Count to 10 seconds and release the ‘Power’ key to enter into upgrade mode.
- Refer to this guide to setup a serial tool for VIM2.
- Make sure again that you’ve done the right connections and setup.
- Hit any keys at the moment of booting to stop autoboot. This step will let VIM boot into u-boot mode.
run updatein the terminal of u-boot as shown below:
kvim2# run update
- Power-on VIM2.(Only VIM2 V14)
- 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.
- After the Power-LED (Blue) turns OFF, this indicates that the board is in Upgrade Mode (Maskrom Mode).
- VIM2 V14
- VIM2 V12
M register is located on the underside of VIM2