[Honor 6X Guides, News, & Discussion] shashank1320:
Hi Folks,

In this guide, I will share step by step details for successful debranding to BLN-L21C432 variant. I used BLN-L22C675B350 model for debranding. This guide will work 100% if followed correctly. This was tested myself last night.

Old version - BLN-L22C675B350

New version- BLN-L21C432B360

NOTE- NFC will not work. I tried few work around but couldn't get this working. So, if your only motive to use BLN-L21 model is NFC, you can avoid debranding.

Refer to my original guide if you wish to debrand to BLN-L22 Indian variant.

Let me share, almost full proof, detailed steps to debrand.

Prerequisites-

Have a full TWRP backup on your current model and store on PC/SD card.

Files for the new model (BLN-L21 variant)

Memory card with at least 8 GB space.

Firmware finder tool to get the files (preferable on PC)

Huawei multi tool

Working PC and of course, Honor 6X

Most important- PATIENCE. Do not panic. It will take max 2 hours including downloads, backup, restore, flash etc. (may vary depend on your download speed) It took me 7 hours of effort last night to debrand and then restore back to Indian variant. (TWRP wont work for restore)

Shall we start? Let’s go further and do it now.

Downloads-

OEMINFO -https://mega.nz/#!uYUwSSQJ!T8tCjSpVgWNpThUIqU5R5mI09W7kWZkd01hltk1kaRc

Main zip - http://update.hicloud.com:8180/TDS/data/files/p3/s15/G753/g104/v82485/f1/full/update.zip

Data file (This is required for putting updater app and other stuff on phone or you won’t get updater, File manager etc)-

http://update.hicloud.com:8180/TDS/...-L21_hw_eu/update_data_full_BLN-L21_hw_eu.zip

Huawei Multi Tool- https://xdaforums.com/devdb/project/?id=19002#downloads (Version V7 zip)

Firmware Finder app on PC – this is not required as I have given the link above. You can still download it for future usage- http://hwmt.ru/hwmtsite/huawei-firmware-finder/ (download for PC) or direct link- http://pro-teammt.ru/projects/hwff/GetLatestVersion.action

Steps-

Unlocking bootloader/rooting and MT tool instalaltion-

Unlock your bootloader, flash custom recovery and root it with this https://xdaforums.com/honor-6x/how-to/root-huawei-honor-6x-install-twrp-t3671822

Backup backup backup your current phone in TWRP.

Installation of Tool installation and backing up current OEM Info file-

Download Huawei Multi Tool from this XDA thread https://xdaforums.com/honor-8/development/tool-huawei-multi-tool-team-mt-t3523923 , direct download link https://xdaforums.com/devdb/project/?id=19002#downloads select V7 zip, extract it and go to the folder.

Run by double clicking the bat file as below

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Once the tool is running you will see the device connected as below (It will show your phone’s serial number)

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Follow step by step images below to backup your current oeminfo file (path of the backup is the folder where you ran the bat file above\backup) in my case it was C:\Users\Downloads\Compressed\Huawei_Multi-Tool_by_Team_MT_v7\Huawei_Multi-Tool_by_Team_MT\Backup

Changing vendor/country- input 7

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Selecting device- input 6X or 6x

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Save or restore OEMINFO - input 1

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Saving OEMINFO- input 1

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Confirmation screen for saving the OEM INFO File.

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Just make a copy of this file to some other folder, as same folder will be used for a new oeminfo file for new model.

Till now, we have just backed up ourselves so that in case we run into a situation where unbale to boot further or stuck, this will be handy to restore.

Let’s proceed with actual rebranding now.

Extract the Main zip file, you will get 3 files as below, copy all of them to SD card/ External memory card under “dload” folder.

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Extract the Data file zip, you will get 3 files as below, copy all of them to SD card/ External memory card under “dload-data” folder.

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Rename the downloaded oeminfo file to oeminfo: BLN-L21C432-oeminfo.zip -->> oeminfo.zip

Copy the OEFMINFO.zip file to backup folder of Multi tool where you backed up the original oeminfo of your earlier model. (above path - C:\Users\Downloads\Compressed\Huawei_Multi-Tool_by_Team_MT_v7\Huawei_Multi-Tool_by_Team_MT\Backup)

Run the Huawei multi tool again same as above but this time, instead of backup of oeminfo, it will be option 2 to restore the file. Progress and status will be similar to

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It should show the progress and confirm the download/restore complete. If this is failed, PELASE DO NOT PROCEED FURTHER and ask in comment section below.

Once OEMINFO restore is successful, you have the oeminfo of new version flashed on your model.

Now reboot the phone. Most probably it will give a prompt as your data partition was damaged and need format to repair. Just do it.

Once format is completed, boot to system. At this point, phone will ask for setup, just skip all the steps and you will see BLN-L21 during setup itself.

At this point, if you check the about phone setting, it will show BLN-L21 but build number will be NRD90M-test-keys.

Enable USB debugging again, boot to fastboot and unlock the bootloader if it shows locked.

Boot normally. Then again boot to fastboot and flash TWRP as earlier.

Remove the USB and Power off the phone by pressing power key now.

Use Volume up+power key to boot to TWRP. Flash the data zip - update_data_full_BLN-L21_hw_eu.zip . This will succeed.

Once flashed, boot normally. This time you will see BLN-L21C432B360 in about phone.

Power off the phone and now use dload method now i.e. press Volume up + Volume down+ Power key together. Stock recovery should start flashing the files (Note- Do not just put the Update.app in dload and need all 3 files mentioned above)

Phone will verify the package and start installation. It will take only 2-3 minutes for 100% flash and phone will reboot.

If you see updater, file manager missing from settings, or unable to use themes boot to fastboot, flash TWRP. boot to TWRP and then reflash the update_data_full_BLN-L21_hw_eu.zip file and boot to system. Everything should be working fine.

Press power key to turn off the phone.

Take out the memory card and delete dload folder or rename to “dload-main”.

Rename the folder “dload-data” to dload.

Insert the SD card.

Use dload method now i.e. press Volume up + Volume down+ Power key together. Stock recovery should start flashing the files (Note- Do not just put the Update.app in dload and need all 5 files mentioned above)

This will take 30-40 seconds maximum to flash.

Once this is flashed, phone will reboot and ask you to set up the phone.

You may skip the google account setup during all initial configuration is by skipping Wi-Fi and removing the SIM card. It will not ask for Google account.

Follow the on screen instruction and Setup the phone.

BINGO. You are on BLN-L21 now and it will support everything the regional phone supports.

I personally faced many issues and damaged my data partition few times but I am writing this guide without those steps which could cause issue and as mentioned, do not panic and proceed step by step and you would achieve what you wished for. Comment below on your experience and share if any modification is needed to the guide, I will do, but as per my knowledge, this is what I could prepare best for any NOOB user who doesn’t even know what root or anything is.

Share your thoughts on guide and ask any question when you stuck. ​

Note-

This was tested from BLN-L22C675 to BLN-L22C432

This may work from any model/variant to BLN-L22C432 (most probably without any issues)

This should work for all BLL models as well, because there are no restriction on Hardware part.

You will recieve OTA updates as I received couple of updates post debranding from B360 to B365 and then B367

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Good luck and enjoy.​