rom flashing - Cubot X9 does not turn on after update, also not recognised by computer (unknown device in Device Manager) - Android Enthusiasts Stack Exchange
FIX] Unknown USB Device (Device Descriptor Request Failed) In Windows 10
Unknown usb device device descriptor request failed windows 10 | Windows 10, Universal Serial Bus, coffee, editing | #unknownusbdevice #windows10 #devicedescriptorfailed Guide to fix error unknown usb device device descriptor request failed
Unknown USB device Solved - Windows 10 Forums
12 Ways To Fix “Unknown USB Device Descriptor Request Failed”
unknown usb device (device descriptor request failed) IX FORMULA