[Honor 6X Guides, News, & Discussion] fbruand:
Hey,

I want to share an updated guide with you to address issues related to the unknown model, boot animation, and build number on the Honor 6X (BLN-L21C432) running EMUI 5/8. It's essential to note that this guide should be followed by users currently on EMUI 2. If you are on EMUI 5/8, I recommend starting from scratch by migrating to EMUI 2, following the 'Soft Bricked Device to EMUI 2' step in this guide Link, as I haven't yet found a viable solution.

Disclaimer:

These instructions are for informational purposes only. Modifying your device's firmware and bootloader carries risks, including potential data loss and damage. You assume full responsibility for any consequences. Backup your data and proceed with caution. Modifying your device may void warranties or terms of service. XDA Developers, the authors, and I are not responsible for any issues. If unsure, seek assistance.​

I've made some revisions to the "EMUI 2 to EMUI 5 (REQUIRED FILES: Honor 6X EMUI 2 to EMUI 5.rar | 1.35GB)" section, and here is the link to download the "Honor 6X EMUI 2 to EMUI 5.rar | 1.35GB": Download Link

Here are the updated steps:

1. Extract [Honor 6x EMUI 2 to EMUI 5.rar]

- This step involves extracting the downloaded file.

2. Use the command `adb reboot bootloader` to reboot your device into fastboot mode.

- This command is used to reboot your Honor 6X into fastboot mode, which is necessary for further actions.

3. From the [HonorOEMINFO] folder, select a model file corresponding to your device, e.g., "BLN-L21C432," and move/copy it to the adb root folder.

- In this step, you need to choose the correct model file from the [HonorOEMINFO] folder and place it in the adb root folder.

4. Execute the following command in a terminal or cmd on your connected computer: `fastboot flash oeminfo <file name>`.

- This command is used to flash the oeminfo file, which will relock the bootloader. Be aware that even if your phone shows as unlocked in fastboot mode, you won't be able to flash images like TWRP after this step.

5. Execute `fastboot reboot` in a terminal or cmd on your connected computer.

- This command will reboot your device after flashing the oeminfo file.

6. Download the necessary firmware files from https://androidhost.ru/6t1 for BLN-L21HNC432. Alternatively, you can search on https://androidhost.ru/search.html or another site, but make sure it contains two .APP files.

- For example, in my case, there is "UPDATE.APP" for migrating from EMUI 2 to EMUI 5 and "update_BLN-L21_hw_eu.app" to fix issues like the unknown model and test-keys under EMUI 8

7. Place the first "UPDATE.APP" file in the "dload" folder on the microSD card.

8. Insert the microSD card into your phone.

9. Open the "Software Upgrade" application and select "1. SDCard Upgrade." Confirm with "OK" when prompted.

10. Wait for the update to complete.

- The first boot may take a while so be patient.

11. Once the update is complete, remove the microSD card from your phone and insert it into your PC. Replace the 'UPDATE.APP' file in the 'dload' folder on the microSD card with the second .APP file and make sure to rename it to "UPDATE.APP

- For example, "update_BLN-L21_hw_eu.app" should replace the 'UPDATE.APP' file in the 'dload' folder on the microSD card.

12. Insert the microSD card back into your phone.

- Re-insert the microSD card with the updated 'UPDATE.APP' file back into your phone.

13. Power off your phone:

- Turn off your phone completely.

14. Disconnect the phone from the computer:

- Ensure that your phone is disconnected from the computer to avoid waiting for the computer to send the update.

15. Power on the phone while holding power button, volume up, and volume down:

- Press and hold the power button, volume up, and volume down buttons simultaneously to power on your phone. Wait for the update process to begin.

- If your battery is low, you can reconnect it after the update starts.

16. After the update is completed:

- Once the update is finished, you can see the original startup animation and find the corrected model and build number in the device settings.

Thank you for following my guide; these steps should help you solve the "test-keys" build number issue on your Honor 6X running EMUI 5/8.

Once you've completed these steps successfully, you have the option to proceed to EMUI 8 by following the guide here under the "EMUI 5 to EMUI 8 (REQUIRED FILES: Honor 6X EMUI 5 to EMUI 8.rar | 1.86GB)" section. If you have any questions or encounter any issues along the way, please don't hesitate to ask for assistance in this thread.

Credits:

Special thanks to lmaohelp for creating the collection of guides and files on XDA-Developers, which served as the foundation for my guide. I'd also like to express my heartfelt gratitude to the LeaOS community, specifically oslo83, VistaSlayer, and AltairFR, for their invaluable assistance in helping me create this guide. Your support and contributions were instrumental in resolving issues and improving the experience on my Honor 6X (BLN-L21C432).