Way to read Data from ATC-flashed devices via Android Gadgetbridge-App

[Razsmithii]

Hello,
title says everything. On the Stock firmware, the battery level (only the battery level!) is readable via the Androir App "Gadgetbridge".
After flashing to ATC FW, connection is possible but no data are available (also not battery level anymore) in the App.
Is there any way to go?

[koostamas]

You can try my web app, I wrote it specifically for Android/Chrome: ATC Reader