- Oct 17, 2013
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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
:winktongue:![Cool :cool: :cool:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
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