Hello,
I have managed to successfully update to the LineageOS 17.1 GSI image with my BV9500 pro. However, as expected, my phone no longer has the Intercom app.
I have made a backup of it, but it does not restore with Titanium backup. I would like to officially request Blackiew to please send me the apk installer for this app.
As they currently have no intention of upgrading the Android version, it is only fair to provide us with the walkie talkie app install.
For those interested, the toolbox app restores correctly. The software is stable for me and work perfectly. The only thing missing is the Intercom app.