how to Upgrade to GDR 3

[David Ye]

I just want to upgrade to GDR 3 to turn off the screen rotate. I don't like to install apps without payment. My device is still in 10211 version. I tried to do it through "preview for developers" but failed as system version is too slow. Anybody can help me?

 

[Laura Knotek]

Please see this thread for information about GDR3 Preview.