@Erik_NL Your advice is as easy as fantastic. If you know it's easy. But like me, if you don't know...... So Thank you very much Erik!! Enorm bedankt voor je moeite om mij deze tip te geven. Heb nu...

How did you extract the update-file (bin-extension)?

It is not possible to update the 3 TP- Deco- M9's with the Deco-app. For several hours i tried to open the updatefile: "M9Plus 2.0_en_1.4.3 Build 20200921 Rel. 42500_up.bin" I tried different...