Thermolog enables firmware updates. For this purpose, you need a flash drive formatted in FAT32. On the flash drive you should copy the firmware to Thermolog. The firmware must be named atgfirmware.bin.
- Insert a pendrive
- Simultaneously press all 3 buttons
- Turn on the power. The display will show Bootloader.
- After a while it will display "press any key" Then press the "L" button
- In a dozen seconds the firmware will update and Thermolog will reboot.