1. Windows Central Question's Avatar
    I have a Lumia 920 (International RM-821), this version does not support AWS (UMTS band 4 2100/1700 MHz) , Can I use other version downloaded with Navifirm, change to RM-820 firmware and enable new bands? Maybe using the Rogers version?
    02-26-2015 04:52 PM
  2. RumoredNow's Avatar
    Flashing different firmware is risky, even for the same variant but switching regions... More so when switching variants.

    Changing the Firmware will not give you a radio frequency that is physically absent from the hardware.

    The RM-821 is a Euro style radio equipped device. It is doubtful the 1700 AWS radio is onboard and just hidden. The RM-820 would have a better chance of 3G 1700 being hidden.

    Before you do anything drastic, see if you can access Field Menu by dialing ##3282#. If you can, follow the example of how to enable 1700 AWS that is given here: http://forums.windowscentral.com/nok...-4-1700-a.html
  3. RumoredNow's Avatar
    Flashing different firmware is risky, even for the same variant but switching regions... More so when switching variants.

    Changing the Firmware will not give you a radio frequency that is physically absent from the hardware.

    The RM-821 is a Euro style radio equipped device. It is doubtful the 1700 AWS radio is onboard and just hidden. The RM-820 would have a better chance of 3G 1700 being hidden.

    Before you do anything drastic, see if you can access Field Menu by dialing ##3282#. If you can, follow the example of how to enable 1700 AWS that is given here: http://forums.windowscentral.com/nok...-4-1700-a.html
    Laura Knotek and xandros9 like this.
    02-26-2015 05:05 PM
  4. xandros9's Avatar
    as he said, changing the ROM won't necessarily change LTE support.

    actually, I have an RM-820 Lumia 920 which I flashed to the RM-821 ROM some time ago.
    It worked great (it was for updates, LTE bands didnt change) until Lumia Cyan which had the unfortunate side effect of breaking LTE. (there was a fix, but not a simple one, fortunately i don't care for LTE so much, and ironically it finally fixed my broken tethering)
    Laura Knotek likes this.
    02-26-2015 10:30 PM

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