+**/etc/udev/rules.d/54-input-club-keyboard.rules:**
+
+```
+# Input Club keyboard bootloader
+SUBSYSTEMS=="usb", ATTRS{idVendor}=="1c11", MODE:="0666"
+```
+
+### Serial device is not detected in bootloader mode on Linux
+Make sure your kernel has appropriate support for your device. If your device uses USB ACM, such as
+Pro Micro (Atmega32u4), make sure to include `CONFIG_USB_ACM=y`. Other devices may require `USB_SERIAL` and any of its sub options.
+
+## Unknown Device for DFU Bootloader
+
+If you're using Windows to flash your keyboard, and you are running into issues, check the Device Manager. If you see an "Unknown Device" when the keyboard is in "bootloader mode", then you may have a driver issue.
+
+Re-running the installation script for MSYS2 may help (eg run `./util/qmk_install.sh` from MSYS2/WSL) or reinstalling the QMK Toolbox may fix the issue.
+
+If that doesn't work, then you may need to grab the [Zadig Utility](https://zadig.akeo.ie/). Download this, find the device in question, and select the `WinUSB` option, and hit "Reinstall driver". Once you've done that, try flashing your board, again. If that doesn't work, try all of the options, until one works.
+
+?> There isn't a best option for which driver should be used here. Some options work better on some systems than others. libUSB and WinUSB seem to be the best options here.
+
+If the bootloader doesn't show up in the list for devices, you may need to enable the "List all devices" option in the `Options` menu, and then find the bootloader in question.
+