I have updated my Lumia 920 to latest w10 mobile TP buila 10149. I did a hard reset after the update. Now my extras+info app is not getting updated. In store beta error code given is 0x80070003. Any workaround there...
Your going to have down load a QR scanner (I checked QR Reader) from the old store and wait for edge to load the page or go to settings once you scan the qr code, tap the edit button, click on the ie icon and choose the old store.
The extras+info app doesn't install at all via the new store.... it keeps cycling well for me anyway.