| in my opinion the problem we all here faced comes from the usb connection options.
orange rono is enabled by default to connect as MPT camera. after restart you will have time out because windows will automatically try to read pictures from phone, and adb will not work correctly until this procedure ends.
just select charghing only, it will reinstall ZTE drivers and after restart there will be no need to remove cable or there will be no connection error.
simple as that. |