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  1. ahmad karaki's Avatar
    I get my lumia 920 from 2 months ago and now i found out that its an unlocked phone from a carrier called lusacell in mexico,and i live in lebanon in my country the denim update is available for lumia 920 but not for this carrier in mexico so my question is can i change the firmware to a cv global one or maybe for the one available to my country and how to do it???
    02-28-2015 05:27 PM
  2. ahmad karaki's Avatar
    No one can help me that's disappointing
    03-01-2015 10:24 AM
  3. Zulfigar's Avatar
    If I were you, I'd just get onto the Preview for Developers and get 8.1 Update 1 that way. I have a Lumia 920 as well and I don't expect a firmware update, so going into the PfD program will essentially give you Denim (though Extras+Info will say Cyan).

    It'll also keep you from hard resetting your device. ;)
    03-01-2015 10:44 AM
  4. ahmad karaki's Avatar
    If I were you, I'd just get onto the Preview for Developers and get 8.1 Update 1 that way. I have a Lumia 920 as well and I don't expect a firmware update, so going into the PfD program will essentially give you Denim (though Extras+Info will say Cyan).

    It'll also keep you from hard resetting your device. ;)
    I'm already on the pfd and I have the latest version but I have some issues and I need to hard reset the phone and I was thinking that when the update is already available for my country why shouldn't I get it
    03-01-2015 10:50 AM
  5. xandros9's Avatar
    You can probably change it - there's a thread related to this - titled I think "how to easily flash your 920 to Amber/GDR2" or something like that. The instructions are for changing the USA AT&T 920 to either the Canadian ROGERS ROM or the French CV ROM. I think you could adapt it for your needs. It's an old guide though, there may be more up-to-date information elsewhere on these boards.

    Do note that changing to a different variant could possibly have unforeseen consequences, but I think it'll be OK.
    ahmad karaki likes this.
    03-01-2015 10:58 AM
  6. ahmad karaki's Avatar
    You can probably change it - there's a thread related to this - titled I think "how to easily flash your 920 to Amber/GDR2" or something like that. The instructions are for changing the USA AT&T 920 to either the Canadian ROGERS ROM or the French CV ROM. I think you could adapt it for your needs. It's an old guide though, there may be more up-to-date information elsewhere on these boards.

    Do note that changing to a different variant could possibly have unforeseen consequences, but I think it'll be OK.
    As I understand this is for modifying wp8 would it work with wp8.1 and what are the consequences for this action I hope to find someone that have done to explain the hole process to me
    03-01-2015 01:46 PM
  7. pankaj981's Avatar
    If the phone is a Mexican variant then flash the LTA MX CV ROM. It's basically the unlocked country variant ROM for Mexico. Latin American variants support various LTE bands which non-American variants do not support. For proper compatibility always flash to the same variant ROM as your original phone's variant is. In this case flashing to the Mexico variant would make the phone unbranded (not unlocked if locked) and would get updates directly from Microsoft Mobile
    ahmad karaki and xandros9 like this.
    03-01-2015 02:08 PM
  8. ahmad karaki's Avatar
    If the phone is a Mexican variant then flash the LTA MX CV ROM. It's basically the unlocked country variant ROM for Mexico. Latin American variants support various LTE bands which non-American variants do not support. For proper compatibility always flash to the same variant ROM as your original phone's variant is. In this case flashing to the Mexico variant would make the phone unbranded (not unlocked if locked) and would get updates directly from Microsoft Mobile
    do you know how to do it and I am not seeing anything related to the carrier the phone was locked too on the phone so the benefits that I will get from this is just getting the update right from Microsoft right?
    03-01-2015 02:45 PM
  9. pankaj981's Avatar
    do you know how to do it and I am not seeing anything related to the carrier the phone was locked too on the phone so the benefits that I will get from this is just getting the update right from Microsoft right?
    If you're asking that question I would not recommend you doing it. Flashing ROMs are easy but it needs quite a bit of reading. Search for "debranding" and "flashing" Lumia ROMs on XDA-Developers. You'll find all the tools necessary for the flash.

    To answer your question, yes I do know how to do it and yes you won't see any additional improvements outside of updates not dependent on carriers to approve. But as you mentioned, if your phone is already unbranded I don't see a benefit of flashing another firmware
    xandros9 likes this.
    03-01-2015 02:56 PM
  10. ahmad karaki's Avatar
    If you're asking that question I would not recommend you doing it. Flashing ROMs are easy but it needs quite a bit of reading. Search for "debranding" and "flashing" Lumia ROMs on XDA-Developers. You'll find all the tools necessary for the flash.

    To answer your question, yes I do know how to do it and yes you won't see any additional improvements outside of updates not dependent on carriers to approve. But as you mentioned, if your phone is already unbranded I don't see a benefit of flashing another firmware
    And what about flashing European rom or even something in my region will that succeed and I think its related to the difference btw rm-820 and rm-821?
    03-01-2015 03:03 PM
  11. pankaj981's Avatar
    And what about flashing European rom or even something in my region will that succeed and I think its related to the difference btw rm-820 and rm-821?
    It'll succeed but you'll end up damaging the LTE and AWS bands permanently. The phone will still work on the 3G bands
    03-01-2015 05:00 PM
  12. ahmad karaki's Avatar
    That's good then I might do it cz my carrier restrict the LTE acess for this phone
    03-01-2015 05:23 PM
  13. ahmad karaki's Avatar
    Does anybody know the difference between rm-820 carrier locked and rm820 global I'm interested basically in update so I can get it faster
    03-03-2015 01:50 PM
  14. xandros9's Avatar
    Does anybody know the difference between rm-820 carrier locked and rm820 global I'm interested basically in update so I can get it faster
    There are a couple variants of the RM-820 I believe.

    There is a ROGERS RM-820 as well as an AT&T one for Canada and the United States respectively.
    I would avoid any ROMs linked to a carrier as it relies on that carrier for updates.

    edit: redacted information, deferring to pankaj
    Last edited by xandros9; 03-03-2015 at 11:34 PM.
    03-03-2015 10:38 PM
  15. pankaj981's Avatar
    Does anybody know the difference between rm-820 carrier locked and rm820 global I'm interested basically in update so I can get it faster
    Refer to this post for 920 product codes
    Nokia Product Code Listing for NaviFirm+ Download - (Nokia 730, 735, 830 Added) - GSM-Forum

    The RM-820 Global Swap is the least updated firmware, avoid flashing it. If you want to stick to RM-920 ROMs then stick with the LTA MX CV ROM. If you want to cross flash to a RM-821 ROM (I won't suggest doing this) then you can pick any CV ROMs. To flash an RM-821 ROM on your RM-820 you'll have to perform a dead flash to avoid FFU errors
    xandros9 likes this.
    03-03-2015 11:26 PM

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