Oddly enough I helped firmware, wi-fi is included.
dante00035, had similar problems on tablets of other brands, it was not possible to win, he writes "saved", but does not connect, the firmware did not help. Likely to singe chip.
Posted 07/08/2017, 9:20: dante00035 @ 07.07.17, 22:22
A feeling that the board what the components are missing.
Unfortunately I can not take a picture, the plate was taken away