Exactly how do you update the DM42 Firmware?

[Geoff Quickfall]

Screen 5 of the instructions shows the WINDOWS pop up and the STM file. Wizard does the transfer automatically. You do not need to load the stm file manually. Just let wizard work and follow the pop ups as per the instructions.

Unless I am there with you, I cannot help any more.

Perhaps someone else can explain Windows: wizards, defender, drivers and etc better than I.

Other than Windows complicating everything with respect to drivers, administrator, defender and etc the SwissMicro tools are exemplary for updating firmware.

Defender issue: google the error and see what comes up. It may be that you are not set as the administrator for your own computer; another Windows idiocy.

Cheers