I saw Pics from PCB of I9300x... aka "Live Demo Unit"... use Google to find.
1.
sympthomes same like RD-PQ...
No GPS, no Call
Reason is and Pics confirm this. Hardware parts missing from PCB...
So my idea is, RD-PQ could have nearly same PCB...
This means, no Softwareupdate can fix this, if Hardware is missing...
2.
Maybe I9300x Live Demo Unit is able to be used as Tizen Test device...
Only idea, NOT tested yet...
Maybe "we" have few months time, to check this. Before MWC 2014 shows Tizen smartphones... maybe.
Only info... only rumour again.
Best Regards