XA2 too here.
4.4.0.64
Hardware fixed as explained and pictured here.
Although I really admire and appreciate @nekron’s work, I really wanted to have a purely GNSS positioning working. Without the need of Google, also.
So now, after several weeks of use with fast fixes for an XA2 (generally less than 3minutes), I can confirm my device had a real hardware problem.
I can now be guided by Pure Maps without problems 