I buy a blackberry q10, it is under version 10.3.1.997 leak I want to go back to the official version of 10.2.1 and wait for the official release peaaase heeelp
Just plug it into your computer and BlackBerry Link will load up (or install if you haven't installed it yet). Then you'll be able it reload the OS to factory settings
So I will have to download official os 10.2.1 and install it on blackberry link is its
If you use BlackBerry Link, it will do everything for you. Just press the factory reset on BlackBerry Link, and it will download the latest official and install it.
I just did that yesterday to my Z10. It brought it down from 10.3.1 to the official 10.2.1
In BlackBerry link select Preferences in the top right hand corner, there you will find Reload Device Software. It will download the last official and load it on to the device.