opelsuper, According to your instructions Device Manager (if you remove the batteries) cyclically and endlessly updates the device, it will appear, and disappear, and so the cycle a few seconds.
The device is defined as:
MediaTek PreLoader USB VCOM (Android) (COM6) Windows 10 says that the device does not need a driver update (if it is time to grab TBD)
opelsuper, If you do, the phone is switched on as usual, but if you want to rekaveri, it passes as it is not loaded.
On the fingers is: twice loaded (logo appeared, went to load and again since)