1. ronaldme's Avatar
    Hi! I want to install the RM-938 firmware (Country Variant) on my RM-940 AT&T Lumia 1520.

    I've Installed different firmwares on my old Lumia 920, from different countries, but I don't know if there are issues with AT&T phones.

    Thanks!

    EDIT: The phone is unlocked and my SIM is not AT&T.
    09-08-2014 06:42 PM
  2. rdubmu's Avatar
    I don't think you can as they are different devices.
    09-08-2014 07:32 PM
  3. ronaldme's Avatar
    I don't think you can as they are different devices.
    Both are Lumia 1520. As I said, I've installed RM-821 on my RM-820 (both Lumia 920).
    rdubmu likes this.
    09-08-2014 08:30 PM
  4. rdubmu's Avatar
    I believe the 1520 938 and 940 have different hardware, for example: QI charging, more memory/microsd support
    ronaldme likes this.
    09-08-2014 10:26 PM
  5. ronaldme's Avatar
    How can I get 3G signal?
    09-09-2014 09:28 AM
  6. ieiejdbx's Avatar
    YES, you can! I did it! :D
    But in my case my L1520 was stuck in airplane mode. Only Re-installing the original ROM back to normal.
    09-09-2014 09:36 AM
  7. Legoboyii's Avatar
    I'd rather just buy an L1520 rm 938 right off the bat from newegg or b&h
    09-09-2014 09:45 AM
  8. RumoredNow's Avatar
    YES, you can! I did it! :D
    But in my case my L1520 was stuck in airplane mode. Only Re-installing the original ROM back to normal.
    ​I would say that was caused by the radio firmware mismatch with radio hardware and why I would not cross flash RM-938 and RM-940.
    09-09-2014 11:52 AM
  9. ronaldme's Avatar
    YES, you can! I did it! :D
    But in my case my L1520 was stuck in airplane mode. Only Re-installing the original ROM back to normal.
    Which operator (SIM)?
    09-09-2014 02:10 PM
  10. omar-zambrano's Avatar
    How you do it, I try it but the update stops and give me error 80188306
    08-07-2015 09:57 PM
  11. jfa1's Avatar
    did you look up that error code to determine what the issue was/is?
    08-10-2015 04:24 PM

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