[GUIDE] - How to root debrand and/or remove Retail mode for P20pro CLT-L29

[ToLive4]

This is a solution created from few posts on XDA. It's only collected, edited and tested by me to have all in one place.
Files currently uploading to Gdrive so be patient

Here is also manual edited by @dladz
Same thread post #152 https://forum.xda-developers.com/showpost.php?p=76785704&postcount=152

ROOT ONLY
1.Unlock Your Bootloader https://forum.xda-developers.com/huawei-p20-pro/how-to/how-to-bootloader-unlock-codes-news-t3785294
2.Root your P20PRO with Patched Ramdisk ramdisk-CLT-L29-MAGISK.img
3.Install Magisk Manager MagiskManager.apk
4. Update MagiskManager

Full Debrand
DONT TRY TO REBRAND L29 to L09 or vice versa will brick or have problems ! EDIT:SOME PEOPLE TRIES AND IT WORKS FROM L-09 TO L-29 https://forum.xda-developers.com/showpost.php?p=76536502&postcount=29

THERE IS NO HW POSSIBILITY TO CHANGE SINGLE TO DUAL SIM, SO EVEN IF YOU GO FROM L-09 TO L-29 THERE WILL BE NO DUAL SIM!!! NOT EVEN IF YOU PAY TO FUNKY

1.Unlock Your Bootloader https://forum.xda-developers.com/huawei-p20-pro/how-to/how-to-bootloader-unlock-codes-news-t3785294
2.Root your P20PRO with Patched Ramdisk ramdisk-CLT-L29-MAGISK.img
3.Copy firmware files via MTP to your internal memory
update.zip
update_all_hw.zip
update_data_public.zip
4.Boot into fastboot mode and flash no check recovery recovery_ramdisk_nocheckP20.img
fastboot flash recovery_ramdisk recovery_ramdisk_nocheckP20.img
5.Install Magisk Manager MagiskManager.apk
6. Copy OEM info binary file to internal memory oeminfo.bin
7.Boot into Android System enable adb debbuging in developer settings.
8. Start ADB
9.adb shell
10.su
11.accept the prompt at your P20pro
12.mkdir /data/local/tmp
13.mv /sdcard/oeminfo /data/local/tmp
14.cd /data/local/tmp
15.chmod +x oeminfo
16. ./oeminfo CLT-L29 C432 hw/eu
17. mkdir /data/update/HWOTA
18. cd /sdcard/
19.mv *.zip /data/update/HWOTA
20.Paste recovery command(all lines at once) and wait for prompt to be shown before next step:
echo "--update_package=/data/update/HWOTA/update.zip" > /cache/recovery/command
echo "--update_package=/data/update/HWOTA/update_data_public.zip" >> /cache/recovery/command
echo "--update_package=/data/update/HWOTA/update_all_hw.zip" >> /cache/recovery/command
21. Exit
22. Exit
23.adb reboot recovery
24.Phone will reboot and starts to install and Rebrand your Phone
Please always use the same Region for Brand and Firmware Files



https://drive.google.com/open?id=1oWS92OT0Bt2bFktwNCIKLsogA8L50g57

 

[DaveP2611]

When you say debrand / remove retail mode?

My phone currently has a locked bootloader (I have the code from Huawei) started out unlocked, with no branding, after putting in a Three UK sim I now have a Three logo everytime I boot up and a factory reset, reinstalls some Three apps and sets my web browser home page to three.co.uk. Would this reset the phone to before I put that SIM card in and gave it that branding.

 

[ToLive4]

It suppose to. I have tested with Live Demo Unit to remove retail mode

 

[zain rizvi]

You just did me a huge favour brother!!

 

[DaveP2611]

It suppose to. I have tested with Live Demo Unit to remove retail mode

This could be perfect then, I will give it a go thank you so much.

 

[Shaolin36]

This is a solution created from few posts on XDA. It's only collected, edited and tested by me to have all in one place.
Files currently uploading to Gdrive so be patient

ROOT ONLY
1.Unlock Your Bootloader https://forum.xda-developers.com/huawei-p20-pro/how-to/how-to-bootloader-unlock-codes-news-t3785294
2.Root your P20PRO with Patched Ramdisk ramdisk-CLT-L29-MAGISK.img
3.Install Magisk Manager MagiskManager.apk
4. Update MagiskManager

Full Debrand
DONT TRY TO REBRAND L29 to L09 or vice versa will brick or have problems !
1.Unlock Your Bootloader https://forum.xda-developers.com/huawei-p20-pro/how-to/how-to-bootloader-unlock-codes-news-t3785294
2.Root your P20PRO with Patched Ramdisk ramdisk-CLT-L29-MAGISK.img
3.Copy firmware files via MTP to your internal memory
update.zip
update_all_hw.zip
update_data_public.zip
4.Boot into fastboot mode and flash no check recovery recovery_ramdisk_nocheckP20.img
fastboot flash recovery_ramdisk recovery_ramdisk_nocheckP20.img
5.Install Magisk Manager MagiskManager.apk
6. Copy OEM info binary file to internal memory oeminfo.bin
7.Boot into Android System enable adb debbuging in developer settings.
8.copy oeminfo to internal memory
9.adb shell
10.su
11.accept the prompt at your P20pro
12.mkdir /data/local/tmp
13.mv /sdcard/oeminfo /data/local/tmp
14.cd /data/local/tmp
15.chmod +x oeminfo
16. ./oeminfo CLT-L29 C432 hw/eu
17. mkdir /data/update/HWOTA
18. cd /sdcard/
19.mv *.zip /data/update/HWOTA
20.Paste recovery command:
echo "--update_package=/data/update/HWOTA/update.zip" > /cache/recovery/command
echo "--update_package=/data/update/HWOTA/update_data_public.zip" >> /cache/recovery/command
echo "--update_package=/data/update/HWOTA/update_all_hw.zip" >> /cache/recovery/command
21. Exit
22. Exit
23.adb reboot recovery
24.Phone will reboot and starts to install and Rebrand your Phone
Please always use the same Region for Brand and Firmware Files



https://drive.google.com/open?id=1oWS92OT0Bt2bFktwNCIKLsogA8L50g57

I don't know what to say... THANK YOU!!! Your update.zip/update_all_hw/update_data_public files just unbricked my phone.. kind of off-topic, but wow. I was ****ting myself! Thank you so much.

 

[Elizage2015]

we can not debrand because hauwei bootloader unlock site not responding

 

[ToLive4]

we can not debrand because hauwei bootloader unlock site not responding

I hope that site will be back soon

 

[nrd\]

very grateful for the finding out and your hard work.

can you explain the following steps: they seem the same?

6. Copy OEM info binary file to internal memory oeminfo.bin
7.Boot into Android System enable adb debbuging in developer settings.
8.copy oeminfo to internal memory

from the downloads there is only one file name 'oeminfo'...also it has no extension i.e. .bin

---------- Post added at 08:34 PM ---------- Previous post was at 08:33 PM ----------

we can not debrand because hauwei bootloader unlock site not responding

Contact support direct via email or chat, they will provide it.

 

[Elizage2015]

very grateful for the finding out and your hard work.

can you explain the following steps: they seem the same?

6. Copy OEM info binary file to internal memory oeminfo.bin
7.Boot into Android System enable adb debbuging in developer settings.
8.copy oeminfo to internal memory

from the downloads there is only one file name 'oeminfo'...also it has no extension i.e. .bin

---------- Post added at 08:34 PM ---------- Previous post was at 08:33 PM ----------



Contact support direct via email or chat, they will provide it.

how can i do that? :/

 

[nrd\]

how can i do that? :/

https://consumer.huawei.com/uk/support/

im in the UK, try changing 'UK' to your local domain if you are not based in the UK...if german DE works so you may have to work your one out, im not sure if you will need local region support or not.

---------- Post added at 09:14 PM ---------- Previous post was at 08:56 PM ----------

amazing...this works, im now on C432 120
Many thanks...instructions work to a T, but i would clear up the steps 6,7,8 as they may confuse.
This my first huawei so im slowly learning, i have nexus's, samsung and sony before so the huawei are new to me.
If for some (strange?) reason i wanted to go back to c732 (UK) how would that be done? would you mind sharing the method?
Also would it be a good idea to save the existing oeminfo in case someone wants to go back? or are these downloadable from somewhere?
Also I would to the instructions root is lost and how to re root the new firmware, factory reset wipes all data and if bootloader is locked or not (i dont think it is but OEM unlock is greyed out).

Many Thanks again.


EDIT: Root after update can be obtained via TWRP as that is now available for p20 i guess? someone confirm?

 

[Elizage2015]

https://consumer.huawei.com/uk/support/

im in the UK, try changing 'UK' to your local domain if you are not based in the UK...if german DE works so you may have to work your one out, im not sure if you will need local region support or not.

---------- Post added at 09:14 PM ---------- Previous post was at 08:56 PM ----------

amazing...this works, im now on C432 120
Many thanks...instructions work to a T, but i would clear up the steps 6,7,8 as they may confuse.
This my first huawei so im slowly learning, i have nexus's, samsung and sony before so the huawei are new to me.
If for some (strange?) reason i wanted to go back to c732 (UK) how would that be done? would you mind sharing the method?
Also would it be a good idea to save the existing oeminfo in case someone wants to go back? or are these downloadable from somewhere?
Also I would to the instructions root is lost and how to re root the new firmware, factory reset wipes all data and if bootloader is locked or not (i dont think it is but OEM unlock is greyed out).

Many Thanks again.


EDIT: Root after update can be obtained via TWRP as that is now available for p20 i guess? someone confirm?

can u help me for unlocking??? i will provide my imei in PM and pls submit it

 

[robot1000]

Does it work with CLT-L09?

If not, are there different files I'll need to flash?

 

[nrd\]

Does it work with CLT-L09?

If not, are there different files I'll need to flash?

It does, the firmware posted here is for l29..i didnt notice until after flash. My device is now branded l29. i wonder if dual sim works? i dont have a tray to test...
So far so good but DO SO AT YOUR OWN RISK>>I TAKE NO RESPONSIBILITIES IF ANYTHING HAPPENS TO YOUR OR OTHER DEVICES WHO TAKE MY ADVICE.

---------- Post added at 05:59 AM ---------- Previous post was at 05:58 AM ----------

Would be good if we can get OEMINFO for l09? is this possible OP?

 

[mcklane]

Thanks OP for this great articel!

I have a question about this statement: 'DONT TRY TO REBRAND L29 to L09 or vice versa will brick or have problems !'

Why would this not work for converting a L09 to a L29? isnt that the same as changing region?

Thank you

 

[ToLive4]

Thanks OP for this great articel!

I have a question about this statement: 'DONT TRY TO REBRAND L29 to L09 or vice versa will brick or have problems !'

Why would this not work for converting a L09 to a L29? isnt that the same as changing region?

Thank you

Simply I didn't try that because I don't have L-09

 

[nrd\]

Simply I didn't try that because I don't have L-09

can you get oeminfo for l09?
Also if one once to go back to another region say c782 (UK) can you give instructions how to?

 

[energyword]

Oeminfo.bin for CLT-L09 (c432)? Thank's

 

[ToLive4]

Oeminfo.bin for CLT-L09 (c432)? Thank's

Use attached oeminfo just edit model name according to manual via adb shell. Instead of CLT-L29 write CLT-L09 as model name (rest of command is same)

 

[energyword]

Use attached oeminfo just edit model name according to manual via adb shell. Instead of CLT-L29 write CLT-L09 as model name (rest of command is same)

I wanted to try to replace this with the original one and then use the twrp method but putting nobrand software. This oeminfo is from the CLT-L29 Nobrand right?

Inviato dal mio CLT-L09 utilizzando Tapatalk