Following the instructions posted, wifi stops working after flashing twrp and rebooting back into LOS. I flashed addonsu-14.1-arm64-signed.zip to enable App access to root. It worked, but wifi is broken on reboot. It turns itself off immediately after turning on.
Replication steps:
1. Follow steps in OP.
2. Reboot to bootloader (adb reboot-bootloader)
3. Flash twrp_mata-6.img (fastboot flash boot twrp.img)
4. adb push addonsu-14.1-arm64.zip /sdcard/
5. Install .zip in TWRP
6. Reboot
Anybody else getting this issue? The only way I've been able to fix it is to re-flash LOS.
EDIT: Thanks to
@bmg1001, this issue is resolved (for me at least) by using this build of TWRP... Sorry, I can't post links yet! Can someone link this please?
https:// drive.google. com/file/d/1Pp9Hep-EEGNHLl6I_ob7ugihpKfrAcWm/view?usp=sharing
Note that flashing this TWRP build will allow you to reboot to recovery at any time without having to reflash TWRP, as mentioned in the OP.