[ajaya p]

My phone still stock on build 10512. When I try to update from build 10512 to 10514,10536. After download complete in 4% of installation update its Get an error message(0x800705b4). I try 3 time but every time 7,6,4% in installing time i face the problem. Yesterday i try again to update but i face same problem. I hard reset my phone but same problem. I have no PC so I am not be able to downgrade to 8.1.
so anyone face same problem. If you face the same problem and know the solution please help me and save me From the critical problem. And all windows central users if you know the solution please help me....

[JasonKruys]

Best bet is to restore to 8.1 then update to the latest 10549 build.

[ajaya p]

Best bet is to restore to 8.1 then update to the latest 10549 build.

please help me.
have no any other only one choice? Is that any possible to fix the problem in next build?

[ajaya p]

Best bet is to restore to 8.1 then update to the latest 10549 build.

Windows phone recovery tool app work in windows 7 PC?