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This question already has an answer here:

I need to update my Lumia 520 from Windows Phone 8.0 to 8.1, but it is not allowing me to download it over the mobile data and I don't have any wifi access.

Is there any way to manually override this so I can download the update on mobile data?

marked as duplicate by row1 May 14 '14 at 3:59

This question has been asked before and already has an answer. If those answers do not fully address your question, please ask a new question.

  • What firmware version are you running? Check Settings > Extras+Info and see what it reports as "Software release". If I recall correctly, the ability to download OS updates over a cellular connection was added in GDR3 (Lumia Black), so if you have an earlier version, Wi-Fi might be your only option. – Indrek May 13 '14 at 12:28
  • its says as Lumia Amber. – karthik May 13 '14 at 14:40
  • This appears to be a duplicate. You can vote to reopen if you feel that it is not. – row1 May 14 '14 at 4:00