I have a big problem updating firmware on some EMX modules.
These devices has firmware inside 4.1.3 and my laptop has 18.104.22.168.
On 3 new emx module update goes fine, on some other old modules update doesn’t work at all and every timme it said signature check failed.
On these device with that problem I tried to install one old software produce with the old firmware 4.1.3 and works fine.
I can’t understand wich is the problem.