Downgrade and upgrading. - Huawei Mate 30 Questions & Answers

Sorry guys for being a noobie, almost a decade I never flashing elms or playing with android. Just started back with the Huawei Mate 30.
So I heard that there's a way to flash the global set version to China stock rom.
I'm kinda confused actually that how to flash a new set of rom if the bootloader are unable to unlock?
If let say can flash, does any of you guys know which Chinese stock rom to choose?
Please help...
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update: 08-07-2021
Manage to downgrade from EMUI 11 to EMUI 10.1.0.
Using Googlefier to install GMS, succeeded.
Waiting for someone to share how to flash CN firmware

Related

Any chance to upgrade from b133 chinese room to marshmello Global room without root?

Im pretty new with Hauwei and i cant understand how to put a Global rom with Hebrew on my Ascend mate 7,
it is now running a chinese room model b133 and every time im trying to update it throw dload and at the update software it failed.
im working on it for 4 hours and i didnt find a way to do it without rooting the device ( witch i dont want to due a low experience at rooting devices and im afraid of brick.)
Thanks
Technically you don't need root. But you need an unlocked bootloader. Of the upgrade is for the same region it should work. Make sure it is
Nerv0x said:
Im pretty new with Hauwei and i cant understand how to put a Global rom with Hebrew on my Ascend mate 7,
it is now running a chinese room model b133 and every time im trying to update it throw dload and at the update software it failed.
im working on it for 4 hours and i didnt find a way to do it without rooting the device ( witch i dont want to due a low experience at rooting devices and im afraid of brick.)
Thanks
Click to expand...
Click to collapse
I don't have an answer for your question, however I have a suggestion. Why not consider upgrading to Chinese LP and then Chinese MM, unlock bootloader, flash TWRP recovery and then Flash Kang VIP B555a.
CloudCompute said:
I don't have an answer for your question, however I have a suggestion. Why not consider upgrading to Chinese LP and then Chinese MM, unlock bootloader, flash TWRP recovery and then Flash Kang VIP B555a.
Click to expand...
Click to collapse
Im really trying to learn but guys im pretty new at that staff..
Ok so the main idea is that i have to open the bootloader and to flash TWRP recovery just to get rid of the chinese rom? No any other options?
Nerv0x said:
Im really trying to learn but guys im pretty new at that staff..
Ok so the main idea is that i have to open the bootloader and to flash TWRP recovery just to get rid of the chinese rom? No any other options?
Click to expand...
Click to collapse
Well, I think you'll need a unlocked bootloader if you want to try out a rom for a different region.
You can try upgrading to an international LP rom via local update. I am not sure if that will work though because I haven't tried that ever. Local update is unlikely to break your phone even if the update fails.
CloudCompute said:
Well, I think you'll need a unlocked bootloader if you want to try out a rom for a different region.
You can try upgrading to an international LP rom via local update. I am not sure if that will work though because I haven't tried that ever. Local update is unlikely to break your phone even if the update fails.
Click to expand...
Click to collapse
Ok i will try can you please just help me with a link to the international LP rom?
im sorry to bother
Nerv0x said:
Ok i will try can you please just help me with a link to the international LP rom?
im sorry to bother
Click to expand...
Click to collapse
You'll find all the international LP roms you need and much much more in the following forum.
http://forum.xda-developers.com/mate-7/general/huawei-mt7-l09-l10-stock-firmware-ota-t3275784
Thanks to our good friend Chudy-85

huawei p8max dav-703l downgrade to android lollipop (emui 3.1)

hello, i am new to this site i signed up just to ask this question. i have spent so many hours trying to find a way to downgrade / roll back to the previous version of my device, i have tried to download the stock rom and install it that way but it does not work, it just says it cannot install the update and suggests a website for me to download the stock rom from, which i then downloaded to only find out it still gives me the same error message, is there anyway i can downgrade to lollipop(emui 3.1) from marshmallow (emui 4.0). can i flash the files over or something, please help, also i have tried to unlock the bootloader and everything but it wont allow me to do that, also if you are able to help me root the device then i wont need to rollback to a previous version, kingroot and anything similar only was able to root my phone when i was on lollipop ever since i upgraded kingroot wont root my phone, any help is greatly appreciated, thanks
Really HuaweiP8max is unstable on android 6...? So I am not going to update to 6... Really sad
What is the main problem with 6 ?

Honor 8 FRD-AL10 debrand

Hi everybody!
A friend of mine gave me a Honor 8, model FRD-AL10, so is the Chinese version.
I would like to install the european version of the Firmware, but i read that it can be dangerous if i dont follow the correct instructions.
I tried to check on the forum, but I did not find any guide that could help me.
Can somebody help me?
Also, if the device crashes, would it be possible to restore it?
And after I install the firmware, can I update it normally, or do I have to flash the new firmware every time?
Thanks
What is the instruction? Tell me about it. btw if phone crashed you can restore via hisuite on your computer.

Help on rooting BLL-L22 @ EMUI 5

I finally managed to snag myself a bootloader unlock code from dc-unlocker.
So can I ask for help for directions here as to where can I read and follow rooting, TWRP installation and installing either a rooted Oreo or a modded working Nougat ROM of BLL-L22?
Another question, out of curiosity, is there a way to switch this phone's software to BLN (Honor 6x) since they're so similar, as to make it easier to just follow proper instructions here, rather than find if any method here would work on my model?
Thanks!
Uh, sure. First of all, you can get Oreo. Official EMUI 8. Or you can flash a Pie custom ROM. Now you need Oreo for that as well so we'll first cover that. To update to Oreo first decide what firmware you want. You can either update to EMUI 8 India or China. India is good as daily driver. China is good for flashing Custom ROMs. Once you have decided, download HWOTA for Honor 6x from XDA. Search for it. Next you need firmware files. If you want Oreo from India search for BLN-L22 HNC185 on Firmware Finder and then download latest Full-OTA. Otherwise search for BLN-AL20 and download latest Full-OTA.

MIUI 12.2.4 Global Downgrade Questions

Hey there forum !
So it's a well known problem MIUI 12.2.4 is a proper mess. I upgraded thinking it's going to be a normal update but it screwed over all my stuff.
After reading many guides and tutorials on the internet I'm still left with many unanswered questions and that's why I'm creating this post to help others and myself get over this mess.
1.) Today I can unlock my bootloader after a week of struggling with this new update.
2.) I choose 12.0.4 Android 10 since this was the last stable update I had and it worked like a charm
What questions do I have? :
I have mi flash software but I don't know what to flash. Is it enough to download MIUI 12.0.4 Fastboot and flash that or do I have to flash firmware and rom after?
I noticed some people are flashing firmwares also ? When do I flash only rom vs firmware also?
Thank you very much
Miflash only works with Fastboot files(TGZ).
firmware contains only the necessary instructions for the hardware to be able to work with the operating system installed on the device .
Xiaomi EU roms works better than stock rom(android 11).

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