[Nokia Lumia 920] MarrkDaviid:
Hey Guys,

Are you missing '4G' under Highest Connection Speed? You likely purchased a device that was '4G Ready', rather than '4G Enabled'.

Why are some devices 4G ready, rather than 4G enabled?

If the device was sourced from a mobile carrier, the carrier might not yet have 4G LTE, so they have not enabled LTE in the ROM. They do not want you taking the mobile to a carrier that already has 4G LTE!

When do 4G ready devices become 4G enabled?

4G ready devices become 4G enabled via an OTA update. When this update is actually released, depends primarily on the mobile carrier.

Is it possible to flash a ROM that has 4G enabled, on my Nokia Lumia 920?

Yes, there are a few different ROMs for the Lumia 920 that have 4G enabled, which can be flashed on the device.

DISCLAIMER: Proceed with the below instructions at your own risk, I take no responsibility for bricked devices etc.

The below instructions are intended for the Global Nokia Lumia 920 (RM-821).

Prerequisites

1. Download and extract NaviFirm Plus 1.7

2. Download and install Nokia Care Suite 5.0

Instructions

1. Open NaviFirm Plus and navigate to 'Nokia Lumia 920 (RM-821)' under products, select '1232.5951.1249.1002' under Releases, select 'RM-821_belgium_proximus_VAR254549_1249_1_001_V1_Black (059R5X4)' under Variants. Click the 'Mark All' button and download the files.

(This is the firmware that I have personally tested, it is possible to use different firmware that is 4G enabled)

2. Navigate to C:\ProgramData\Nokia\Packages\Products (you might need to create the Products directory)

3. Create a folder inside of the Products directory called: rm-821

4. Open NaviFirm Plus and copy your save path (e.g. mine is C:\Users\sales.support\Desktop\navifirmplus_1.7\NaviFirm+ 1.7\Fw\)

5. Paste this path into Windows Explorer, there should be a folder called '059R5X4'

6. Copy all of the files inside of '059R5X4' (once they have finished downloading), and paste them into C:\ProgramData\Nokia\Packages\Products\rm-821

7. Run the application 'Launch Nokia Care Suite', and select 'Product Support Tool For Store 5.0'

8. Disconnect your mobile from the computer

9. Navigate to File > Open Product, select RM-821 from the list

10. Click on 'Programming' in the bottom left hand corner of the application, select Recovery

11. You should see the firmware that you previously copied to the '\Products\rm-821' directory

12. Your mobile should still be disconnected from your computer, select this firmware and click Start

12. The software will fail to find your mobile (because it is not connected), this is what we want to happen. You should now see the below screen:

13. Connect the mobile to your computer

14. Hold down VOLUME DOWN + POWER, click 'Retry' after you feel a vibration from the mobile

15. Release the two buttons and hold down VOLUME UP

16. Keep holding down the volume up button until the software on your computer says 'Rebooting'

17. You will then see a Nokia logo appear on your mobile shortly afterwards, and the software will start flashing. If you are asked about the firmware you are flashing not matching the firmware currently on your device, accept this.

18. Your device should now reboot to the setup screen, and once you have setup the device, you should now see a '4G' option under Highest Connection Speed

Please click the 'Thanks' button if this thread helped you, as it took quite a while to write up. :)