1. Windows Central Question's Avatar
    My daily driver is a nokia lumia 928. Right now its running windows phone 8.1 update. I was wondering if it would be a good idea if I upgraded to windows 10 and if there is anything I should know before doing it. P.S. I don't have a back up phone.
    07-13-2015 12:29 PM
  2. Harrie-S's Avatar
    Then I would suggest not to do it.

    If you however still want to do it first download and test the WPRT. How can I recover/reset/restore my phone software? - Microsoft - USA
    If you can install it and can connect your phone to it then at least you have a way back.
    Furthermore if you want to use the W10 keep your phone connected to a charger.
    And be sure you have a back up of your stuff.
    07-13-2015 12:46 PM
  3. Richard Norman II's Avatar
    I am having some subtle issues with 10166 and secondary authentication of accounts. I can't seem to get my Windows accounts to work with secondary authentication enabled.
    Overall 10149 did a better job in my opinion.

    What I have discovered is that the biggest issue is that the upgrade/migration process may cause high battery usage/drain or the phone running hot. Before reverting back to Windows 8.1 I tried a hard reset and that seemed to fix the problem for me.

    So I would recommend using the Slow ring if it is your only phone and backup everything before the upgrade because you MAY have to do a hard reset to fix the battery issue. But that is what you get when you are trying new things.
    07-15-2015 03:12 PM
  4. vonchowder's Avatar
    I've tried to install 10166 on my 928 yesterday multiple times. It goes through the process and then error messages out many minutes later saying 'couldnt update at this time. This may be a temporary issue. Please try again later'

    Well, trying again later does not help.

    It has more than enough space to install. No other messages to help understand the problem.
    07-24-2015 01:49 PM
  5. dkediger's Avatar
    Late to this thread, but I have '166 on my old backup 928. While its "OK" as a test platform, more than a little sluggish, I would no way, no how do this if it was my primary phone....FWIW
    07-24-2015 01:59 PM

Similar Threads

  1. How to make my lumia 720 OS back to win 8.1 from win 10 ?
    By Indrajit11195 in forum Windows Insider Program
    Replies: 4
    Last Post: 03-12-2016, 02:01 PM
  2. Lumia 930 UK and 10166 Notifications etc
    By Mad Cabbie in forum Windows Insider Program
    Replies: 4
    Last Post: 07-14-2015, 07:31 AM
  3. Can screenshots be taken using an app in Windows Phone?
    By NanduRavi in forum Windows Phones
    Replies: 2
    Last Post: 07-13-2015, 04:40 PM
  4. Dropbox for Windows Phone updated with video streaming and more
    By WindowsCentral.com in forum Windows Central News Discussion & Contests
    Replies: 0
    Last Post: 07-13-2015, 11:42 AM
  5. Critical_process_die error on my Lumia 530
    By Murtaza Dhundhiyawala in forum Other Operating Systems
    Replies: 3
    Last Post: 07-13-2015, 11:25 AM