I recommend you use the USB flash drive to update V1.12.1.
How to Update Firmware
- Via a USB flash drive
- Put the firmware update file Snapmaker2_V{version}.bin in your USB flash drive.
- Plug the drive into the Controller.
- On the Touchscreen, tap Files > USB > Snapmaker2_V{version}.bin .
You need to update three tool-heads separately, which means you need to update the firmware when every tool-head is mounted, and update the firmware three times.
For the laser module, plug it on and then update the firmware.
Switch to the 3DP module, update the firmware once again.
The same to the CNC module.