If the firmware update does not start under Windows 8.1 or Windows 10, a new bootloader must be installed on the measuring device once. A description and all necessary files can be found under the search term: Update-Kit / Bootloader
(testo 330 LL | testo 330i | testo 350 Control Unit + Analysis Box | testo 320)
If the firmware update does not start under Windows 8.1 or Windows 10, a new bootloader must be installed on the measuring device once.