1. MDK22's Avatar
    For those of us who have gotten the unlock code from AT&T for our various Lumia devices ...

    Thursday, I fell back to WinPhone 8.0 from WinPhone 8.1 Dev Preview so I could download the official WinPhone 8.1 / Cyan update. Process took a while.

    When you're done, don't forget to unlock your phone (my Lumia 1520 was sim LOCKED, again - you're flashing the AT&T rom to go back to 8.0).
    - dial ##7820# (this works on my Lumia 1520)
    - you'll get the screen w a lock & text box for entering unlock code
    - if lock is OPEN, you're OK
    - if lock is LOCKED, re-enter your unlock code

    xandros9, nitrocs and Blacklac like this.
    07-26-2014 07:57 AM
  2. nitrocs's Avatar
    Good catch
    Mine was re-locked & I had to put my unlock code in again
    07-27-2014 08:53 AM
  3. berny_533's Avatar
    Is data sense and wifi sense still available with the ATT 8.1 upgrade?
    07-29-2014 10:43 AM
  4. Blacklac's Avatar
    Is data sense and wifi sense still available with the ATT 8.1 upgrade?
    Yes it is. On the 1520 at least.
    07-29-2014 10:49 AM
  5. berny_533's Avatar
    thanks will upgrade
    07-30-2014 08:50 PM

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