If you open Device Manager, you can see the USB device which is displayed under Universal Serial Bus controllers is marked with a yellow exclamation and with message "Unknown USB Device (Device Descriptor Request Failed)".
"Unknown USB device (device descriptor request failed) code 43" If Windows still does not recognize it, your device may not be working properly." "One of the USB devices attached to this computer has malfunctioned, and Windows does not recognize it." The last USB device you connected to this computer malfunctioned, and Windows does not recognized" When you insert the USB device to your computer, you may get following message depending on your PC. If it fails to work properly on Windows 10, the USB drive cannot be recognized by system and you may get errors like code 43. The USB device descriptor is used to store information for USB drives and it is responsible for recognizing different USB devices. They are portable, small-sized and large in capacity, making users carry huge amount data or transfer data between devices. USB devices come in various tyes, such as USB flash drive, memory card, pen drive, etc. When it comes to transferring data from one device to another, USB (Universal Serial Bus) devices might be the first choice. In this article, you can find 8 reliable solutions to fix the problem and make your drive work again. The USB device_descriptor_failure is one of the issues we often encounter. Your USB device cannot be recognized or reports device descriptor request failure error in Windows 10/8/7? We use USB devices all the time and it is quite frustrating when it is ma lfunctioned, not working or not recognized in Windows. Solution #8: Recover lost / deleted files from USB flash drive.
Solution #7: Update driver software for Generic USB Hub.Solution #6: Disable USB Selective Suspend Settings.Solution #5: Disable Fast Startup to fix USB device failure.Solution #4: Check and repair bad sectors for the malfunctioned USB device.Solution #3: Uninstall and update the USB driver in Device Manager.Solution #2: Use Hardware and Device troubleshooter.Solution #1: Check USB device & connection status.What causes unknown USB device device descriptor request failed?.And then you can disconnect your phone from PC and close the LG Flash Tool utility as well. Once it’s complete, your phone will automatically reboot. Now watch the firmware update progress bar on your phone.Once that happens click OK to the Connection to server failed error. Watch your phone closely, you’ll see some activity going on the screen with COM written in green text.DO NOT disconnect your phone at this point. Just wait until it’s 100%, after which you might get an error Connection to server failed. To finally begin firmware flashing process, hit the OK button.
And remember to NOT tick the Smartphone upgrade checkbox, it’s for Windows Mobile phones not your LG device running on Android. Select Different from the country list and then English from the language list.
If you’re upgrading from a stock firmware, then Normal Flash might do. └ Note: the “Normal Flash” button doesn’t wipe data but the CSE Flash button wipes data. kdz firmware file, click CSE Flash button to proceed on flashing the.
Click the browse button at the end of the Select KDZ file line. Leave every other option as is on the LG Flash Tool window. kdz firmware file into LG Flash Tool window on your PC.