[HELP] wifi not working in HTC U11 after flashing lineage os 15.1

[sameerxxxpo]

Hello
I installed lineage os 15.1 using TWRP in my htc u11 and now after installing WiFi is not working
whenever I turn it on it turns off automatically in few seconds
Please help me with that if possible
.
I have found this similar thread but cannot understand since I am newby in android.
https://forum.xda-developers.com/u11/help/help-wifi-installing-custom-rom-t3937210?nocache=1
How did he solve help me if possible
.
I have tried flashing multiple times and also wiped format system, data, and internal storage before flash Lineage OS
Thanks in advance

 

[sameerxxxpo]

I have tried installing different os (lineage os & leedroid) but wifi doesnt work in anyone but reverting back to original backup it works

 

[VuongDepTrai]

Because your OS verison is 3. U should back to stock and downage your os version into 2 to void the issues.
Sory mt bad english