Hi guys, I just installed this rom and it's very nice and smooth unlike oos12. I just had some problems and I was wondering if i could get some help. First of all, I got a Oneplus 7 1903, I did rollback from oos 12 to oos 10, then updated to oos 11, unlocked the bootloader and finally installed the recovery and the actual rom following the steps on the official website.
So, my problems are:
1) Widevine. I checked it on oos 11 after unlocking the bootloader and it was on L3. I read online that when you unlock the bootloader widevine goes from L1 to L3. Is there any way to fix this?
2) I only got LTE connection instead of 4G/4G+ as I normally had
3) minor issue - I got some Oneplus Buds Pro, I connected them to the device and then installed HeyMelody because obviously not running on oos i'm not able to modify the audio settings and other stuff, but It tells me that "A complete collection of earbud settings can be found in your phone's Bluetooth settings". Obvioulsy, no more setting because I'm not on oos.
Can someone help me with those issues please?