is not a consumer product you can buy, but rather a firmware bootloader state that appears when certain gaming controllers—most notably the 8BitDo Ultimate Bluetooth , GameSir G7 , and some generic DualShock 4 clones—fail or enter a recovery mode.
: While some users fix it by re-flashing official firmware provided by the manufacturer (e.g., br23uboot1.00
Right-click and uninstall the "BR23UBOOT" or "USB Mass Storage Device" entry. Unplug the device, restart your PC, and plug it back in. is not a consumer product you can buy,
If your device is stuck in this mode and not working, it usually indicates a "bricked" or corrupted firmware state. Users have successfully restored their devices using these methods: Hardware Reset If your device is stuck in this mode
Find the "USB Mass Storage Device" or the item with a yellow exclamation mark.