Quote from: Perodis on April 03, 2026, 09:02:49 PMJust received my Thumby today and am trying to get the code editor connected so I can get games downloaded and it isn't connecting. On my device manager it shows as 'Unknown USB Device (Device Descriptor Request Failed)'.

The steps I've tried to fix this are the fixes in the FAQ (Reloading the firmware and installing Zadig and installing a USB Serial (CDC) driver). Neither have worked. When I did the reloading the firmware, my computer did detect it as RPI-RP2, which then I placed the firmware into the device, so it is connecting to my computer. But as soon as the firmware loaded, it went back to 'Unknown USB Device (Device Descriptor Request Failed)' in Zadig and my device manager.                                                                                                                                                                                       heardle online

I'm at a bit of a loss, so if anyone could help me, I would really appreciate it. I'm on Windows 10.

Hi Perodis,

Since the computer recognizes the Thumby as **RPI-RP2** when you hold it in bootloader mode, the USB connection itself seems to be working, so I'd suspect the issue is happening when the normal Thumby firmware starts.

A couple of things I'd try before reinstalling anything else:

* Try a different USB data cable and, if possible, a different USB port (preferably a direct motherboard port rather than a hub).
* Remove the Thumby from Device Manager, unplug it, reboot Windows, and then reconnect it.
* Make sure you're using the current Thumby firmware and code editor rather than an older version.
* If you have access to another Windows PC, testing it there would help determine whether this is a Windows/driver issue or something with the Thumby itself.

The fact that flashing the firmware works but the device immediately becomes **"Unknown USB Device (Device Descriptor Request Failed)"** afterward is a useful clue. If it behaves exactly the same way on another computer with a known-good data cable, I'd contact TinyCircuits support because there may be a hardware/firmware issue rather than a Zadig problem.

Hope you get it working—it's frustrating when a brand-new device gets stuck at the USB stage.