About U30GT-H U30GT-W
The same hardware and different firmware.
WIFI effect is the same.
If you want to upgrade the firmware, download the correct firmware version.
Same people said taht:
The U30GT- W was the Testing model, and the U30GT- H is the official model which already fixed the Wifi problem of the U30GT - W.
That is wrong.
The U30GT Testing model Just 20 Units for the Test user.
U30GT Testing model is not been sold.