E pozdrav, Izvini, ali moramo ovdje na engleskom, takva su pravila foruma bila. Mislimd a su i sada. Da nas ne blokiraju.
Yes. I wasn't try on Google Play. If you make it, please, send me info about process.
In a mean time I was find what was a problem. It was version of Android. You must have minimum version 5 of Android.
Even it is declared from PC SOFT , for HF access 4.0. But for some other functionality, it will not work.
I read date and time of .APK file from server side and then from local side. If it is a different then process ShelExecute() and close application for another start of new version. It work like a charm, but with newer versions of Android.
Best regards and thank you for answer.