I have the Phantom 3 advanced, it was working today all bery good, made some flights all ok. Phantom 3 Firmware and Controller have latest version.

After updating today the dji go app, it seems ok, camera working? Gps ok, homepoint was updazed automatically all ok, BUT if i wamt now start the drohne i get the error ESC error contact dji Support. (On my Tablet and mobilephone the same fucking shit)

Fantastic, i needed it today for se Business. So i lost today near 1.000,00€ :-(

Wjat should i do now?

I've replied to the other thread you started with this same question.

App upgrading won't lead to ESC error. ESC error is a hardware error which needs repairing usually.