The LUFA version is 100807, as in the hardware-pinoccio repository. This version is required for both DFU and USB serial firmware. The arduino-usbdfu directory contains the DFU bootloader on the 16U2 ...
Marlin 2.1 Printer Firmware For Longer LK4/LK5 Pro and Alfawise U30 Pro. IMPORTANT!! This firmware will not work on touch screens other than model DW. In the About, the screen firmware version may ...