Posted by blackberry z10 stl100-3
I have BB z10(stl100-3,model RFH121LW,)i got it in 2016 i have been using it until 2017 when some one told me that he can upgrade it its OS but it never completed it stopped on BB id username when putted the one i used before it refused email:i opened anew one email:[email protected] still its not working help to over come this problem