Device: kagura

I have the same problem. when you get a call no ringtone sound just vibration.

Any solution for ringtone sound!

UBports Installer 0.8.7-beta (AppImage)
Environment: openSUSE Tumbleweed 20210319 linux 5.11.6-1-default x64 NodeJS v12.18.3
Device: kagura

What I did.

1- First try . Enable OEM lock and Debug.
Phone didnt boot.
2-Second try. phone is on the flashmode and light is blue.
ubports app. flashed firmware again then ubport "installation update"
appears on screen after that I unplugged usb cable. No need install rest of it.
3- İt has worked but just incoming call sound doesnt work. when you got a call no ringtone sound just vibration.

Any solution for ringtone sound!