Howto Boot Into Upgrade Mode

There are many different ways to boot into upgrade mode listed as following:

  • Keys Mode
  • Serial Mode
  • Linux/Android command line
  • Force enter Maskrom mode
  • MRegister Mode

Usually, the first four methods will meet most of the user needs, but in some case, for example, if burnning a wrong u-boot, or your device cannot even boot any more, in thus cases, you can try with MRegister mode.

Keys Mode(U-Boot is running)

  1. Power on Edge.
  2. Long press Func key without release.
  3. Short press ‘Reset’ key and release.
  4. Count 2-3 seconds and release the ‘Func’ key to enter into upgrade mode, you will see the sys-led on when enter upgrade mode(loader mode).

Serial Mode(For developers)

  1. Refer this guidance to setup serial tool for Edge.
  2. Make sure again you’ve done the right connections and setup.
  3. Hit any keys at the moment of booting to stop autoboot. This step will let Edge boot into u-boot mode.
  4. Type run update on the terminal of u-boot as belowing, you will see the sys-led on when enter upgrade mode(loader mode).
kedge# run update

Android/Linux command line

  1. Refer this guidance to setup serial tool for Edge.
  2. Make sure again you’ve done the right connections and setup.
  3. Boot into android or linux command line.
  4. Linux executes sudo reboot loader, Android executes su and reboot loader, the system will reboot and enter upgrade mode, you will see the sys-led on when enter upgrade mode(loader mode).

Force Enter Maskrom Mode

  1. Power on Edge.
  2. Quickly press Func key 3 times in 2 seconds.
  3. You will see the power-led blink, then short press Reset key, you will enter upgrade mode(maskrom mode).

MRegister Mode(Maskrom Mode)

  1. Power on Edge.
  2. Use a tweezer to short-circuit the two pads of M register and without release.
  3. Short press Reset key and release it to boot into upgrade mode(maskrom mode).

Image of MRegister_ShortCircuit
Tips: The M register is loacated on the bottom of Edge