"Unknown device" in Device Manager

Issue:

The device is marked as Unknown Device in the Device Manager. The issue may occur when the PC is switching on with the plugged-in device.

Solution:

There are two types of bootloaders:

1. B2 - Sometimes may cause the Unknown Device issue during the PC turning on. 
2. B0 - The new version of bootloader.

To fix the issue, the B2 bootloader should be updated to B0.

Please follow these steps, to change the bootloader version:

1. Download UpdateBootloader archive.
2. First of all please, check the bootloader version you have. To perform scanning for all connected devices and define their bootloaders types – run the rglscan.bat file:
   
3. To perform updating the bootloader on all the connected devices with the transferring to the bootloader type B0 – run the rgltob0.bat(step6) file:
   
4. Now you can check the new bootloader version by running rglscan.bat file again: