I also have used flasher-3.5 with debian linux to update to PR1.2. Update OTA was not possible (don't know why, because I bought it this month and haven't installed too much (maybe due to an app which also installed QT4.6?). I just got the message from the Packet Manager, that I have to use the Nokia Flasher Software to upgrade to PR1.2 (or something like that).

I don't have flashed eMMC. Don't know why I should have done it or why anybody else wanted to do that :-)

regards,
nexus