1. Open the Download-Tool, which you can download here: https://www.dropbox.com/scl/fi/r0308zvz0tslygt04o9dh/Cloud-ATMEL-V4.100-251027-01-bootloader-j.zip?rlkey=rereizzt2qfokwben4utuhcgu&st=9wqhc3wb&dl=0
2. After opening the software, please enter the word "dlmode" using your keyboard.
3. Another button will appear and it should look like this:
4. 
5. click on that new button and select the "boot V4.005j.BIN" - file
6. After the loadingbar will be finished you can continue with "Download Firmware" (first button)
7. Click "Download Firmware" and select the "Cloud ATMEL V4.100 (251027-01).BIN" - file
8. The Printer will restart after the Firmware Update