However the turned off smartphone was not detected by the guest and the update didn‘t work. (I cannot remember the error messages.) Thus I had to install it in my host system, which I wanted to avoid originally.
How could I have been successful in the guest?
The same topic is interesting to me for another reason too. I am thinking about flashing another smartphone with a custom ROM.
[1]
google for: WIKO_MAJ_ALL_MTK2.pdf
[I‘m not yet allowed tot post URLs.