Khadas VIM2 MAX dual OS dead after booting into UBUNTU



i have some serious problems with my VIM2. I just got it today and i installed the latest dual os image with success (VIM2_DualOS_Nougat_Ubuntu-16.04_V171028). After sucessfully booting 2 times in android i tried the option to restart into UBUNTU. When i tried this option after restart i only got a black screen!
The device is totally unresponsive to nothing. The led is burning white. I tried to reflash but windows 7 pro does not recognise the device any more. It shows as nothing is connected to USB.

Please help me with this issue.


Have you correctly booted into recovery mode. here are the instructions:

Hello, Using the supplied USB-C to USB cable…

Press and hold the power button, while holding the power button, Connect USB cable to PC, quick press the reset button, hold the power button for at least 3 counted seconds.

Note: After pressing the reset, it is easy to count to 3 seconds too fast, count out loud to 3 like, 1001, 1002, 1003. You can’t hold it too long, VIMs will enter upgrade mode even if you keep holding the power button. I find whenever I do a deliberate count, VIMs enter upgrade mode reliably.
Hope it helps.