I deactivated all modules. Then opened the Xposed Framework app. Then went to Framework, then tapped "Uninstall. "
Reboot. Edit build.prop, reboot.
Reinstall Framework; reboot. Reactivate modules; reboot.
Go to Wanam Xposed > System > "Disable Tether Provisioning" checked
Then fire up your favorite task manager. Locate "AT&T Hotspots" and clear cache AND data; reboot.
If this does not work, use Titanium Backup or Rom Toolbox and freeze/advanced freeze the "Tethering.apk"
i try to do what you said.
but when i modified the prop. i cannot reboot my phone. ?it get stuck