Thank you very much for your support. It looks like both the issues(tethering and location) are now working in the new test build.
Tethering - kept it ON for close to 30 minutes and it works
Location - tested with GPS test app from F-droid and I get proper details even inside my house.
Generating a clean build now. Will upload and update the post very soon.
Edit: New download link: Mediafire