[Question] Rolling back Emui 8 to 5.1 on new Huawei Mate 10 Lite with WARRANTY - Huawei Mate 10 Questions & Answers

Hi!
I bought a TWO brand new Huawei Mate 10 Lite.
Both model: RNE-L21 with Emui 5.1
I updated only one of them with OTA from EMUI 5.1 (RNE-L21C432B133) to EMUI 8.0 (RNE-L21 8.0.0.341(C432))
The only reason why I updated my phone was that they wrote note "The system version can be rolled back to the official version of EMUI 5.1 in Phone Manager".
I don't know if Phone Manager is the same thing as HiSuite but i tried HiSuite and I'm not able to downgrade because it's says that my System is up to date. I've tried many different versions of HiSuite (last one 9.0.2.301) and about 2-5 times I've been lucky to see that option "See other versions" to downgrade (to RNE-L21C432B137CUSTC432D001) but anyway when downloading come up to 100% its end with error "Failed to update".
*Edit* - HiSuite and See other versions problem solved
I've seen on forum that alot of people had problem with downgrading in HiSuite and annoying message "System is up to date". They wasn't able to see option "See other versions" to downgrade. I spend many hours today to find out why sometimes I can downgrade and mostly not. To solve this problem I took out my simcard, switched off wifi and enabled airplain mode. Now HiSuite is letting me to choose firmware but when downloading is complete, phone disconnect with error "Failed to update".
As i said they are both new with warranty so I also tried to contact customer service and a guy said that I can't roll back. I told him about message before update but he ignored to comment that so I asked about HiSuite problem and his answer was "if HiSuite doesn't let me downgrade so he cannot do anything more about it"
Now I wanna ask you, what should I or can I do about it?
They shouldn't write that I can rollback if i cannot.
BL is also locked and they don't gives keys to unlock anymore. How to rollback?
Hope you help me guys.
Sorry for mistakes. English is not my mother language.
Best regards

paxsu said:
Hi!
I bought a TWO brand new Huawei Mate 10 Lite.
Both model: RNE-L21 with Emui 5.1
I updated only one of them with OTA from EMUI 5.1 (RNE-L21C432B133) to EMUI 8.0 (RNE-L21 8.0.0.341(C432))
The only reason why I updated my phone was that they wrote note "The system version can be rolled back to the official version of EMUI 5.1 in Phone Manager".
I don't know if Phone Manager is the same thing as HiSuite but i tried HiSuite and I'm not able to downgrade because it's says that my System is up to date. I've tried many different versions of HiSuite (last one 9.0.2.301) and about 2-5 times I've been lucky to see that option "See other versions" to downgrade (to RNE-L21C432B137CUSTC432D001) but anyway when downloading come up to 100% its end with error "Failed to update".
*Edit* - HiSuite and See other versions problem solved
I've seen on forum that alot of people had problem with downgrading in HiSuite and annoying message "System is up to date". They wasn't able to see option "See other versions" to downgrade. I spend many hours today to find out why sometimes I can downgrade and mostly not. To solve this problem I took out my simcard, switched off wifi and enabled airplain mode. Now HiSuite is letting me to choose firmware but when downloading is complete, phone disconnect with error "Failed to update".
As i said they are both new with warranty so I also tried to contact customer service and a guy said that I can't roll back. I told him about message before update but he ignored to comment that so I asked about HiSuite problem and his answer was "if HiSuite doesn't let me downgrade so he cannot do anything more about it"
Now I wanna ask you, what should I or can I do about it?
They shouldn't write that I can rollback if i cannot.
BL is also locked and they don't gives keys to unlock anymore. How to rollback?
Hope you help me guys.
Sorry for mistakes. English is not my mother language.
Best regards
Click to expand...
Click to collapse
Hi, try Firmware finder from Play Store, version 9.7 Select RNE-L21C432B137 firmware from 2018.06.02 N* 160963 . Use eRecovery method (recommended for Oreo). GL!

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Pretty straight forward question. My phone is rebranded as I bought it off Banggood. The box says STF-TL10, my settings say STF-LO9. What phone version do I choose in order to download the according firmware? Also, will this change my language settings or/and delete any files/settings from my phone? Could I mess this up? Haven't been active in flashing in a while. Any help would be greatly appreciated.
I'm not 100% on flashing a rebranded phone but i've read a few horror stories about failed flashing . Have you looked at https://4pda.ru/
I got some OTAs when i first bought it but it has been silent since july i think :/. Also i just checked the site and im not sure to what am i searching there
paste the link into google search and it can translate the site to whichever language you prefer
XperiaNoobie said:
Pretty straight forward question. My phone is rebranded as I bought it off Banggood. The box says STF-TL10, my settings say STF-LO9. What phone version do I choose in order to download the according firmware? Also, will this change my language settings or/and delete any files/settings from my phone? Could I mess this up? Haven't been active in flashing in a while. Any help would be greatly appreciated.
Click to expand...
Click to collapse
You use STF-L09 if your settings says so.
Does your settings state 6 GB ram ?
I'm in same case scenario with a STF-L09 which is in fact a STF-AL00 4GB/64GB.
Hicare can state your IMEI's are in huawei database a STF-TL10 but it does not matter for ota or anything else.
If you use FF to OTA with DNS or VPN, if it's still working, you'll have to use aproved firmware or it will just failed.
If your bootloader is already unlock download STF-L09 via FF and use HURUPDATER.
TL10 is better than ALx0
Ok so actually this happened. I tried to find an OTA through the OS without tampering with anything. After 3-4 refreshes a new update appeared around 3.2GB. I downloaded it and installed it and it worked pretty much how it should. The whole thing with the bootloader is another thing. Whenever I try to find my bootloader ID through apps it says unknown, I also missed the deadline when Huawei offered the bootloader codes, I tried the one that XDA offered got no response and now all that is left is DC phoenix or something related to that. Any tips?

Need help updating Mate 10 to EMUI 9

So I've been stuck waiting (probably forever) for my carrier (AT&T México) to push out EMUI 9. Been asking in their forums on a release date and they said they don't have one but it's coming "soon" (never).
I'm looking into changing the firmware into stock EMUI (no carrier firmware) so I can get EMUI 9 and future updates (like EMUI 9.1) as soon as they come out.
Thing is, I'm gonna need some really detailed help since this is my first phone and I've never done any of that advanced flashing stuff and whatever on it.
Would really appreciate the help guys
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Mate 10 ALP-L09
8.0.0.137 C212
CUSTC212D001
AT&T México (bought through the carrier. Has carrier firmware, not sure if it matters)
Phone also displays this whenever it boots up (I think it means the bootloader is unlocked? Even though I've never tinkered with the phone):
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(1) Press Power key to continue.
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Help my honor 8x bricked

My device died when I tried to install Pie Update by HiSuite and FirmwareFinder the message says "your device has loaded a different operating system"
I tried to install stock firmware by " dload " but i failed > This release is not compatible with the current version Please install the correct version
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please help
Anything new?
Hello! Have you ever found a way to sort it out? same situation here.. I'd even contacted DC-Unlocker team and they said there's no plan for this model anytime soon!!
Seems to me that the only way to unbrick this phone is to purchase a bootloader and an FRP unlocking codes, that's frustrating because it's ridiculously expensive!!
Zaki4t said:
Hello! Have you ever found a way to sort it out? same situation here.. I'd even contacted DC-Unlocker team and they said there's no plan for this model anytime soon!!
Seems to me that the only way to unbrick this phone is to purchase a bootloader and an FRP unlocking codes, that's frustrating because it's ridiculously expensive!!
Click to expand...
Click to collapse
my device is live by installing the correct last version of frimware 9.0 for my device version and region
MFAco said:
my device is live by installing the correct last version of frimware 9.0 for my device version and region
Click to expand...
Click to collapse
Hello, can you explain how to make it work? Even dload method doesn’t seem to work for me cause I get the ‘failed to install’ message (instead of saying that I’m on a different version or so)!! dload method never worked for me it’s like I had no sdcard inserted.
I would like to get a detailed tutorial since I’ve never had ‘dload’ method to work, I think I am missing something!
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I would appreciate anyones help. I have a Huawei Mate 20 Pro Model LYA-L29. When I run the commands it tells me this about my Firmware Version:
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BASE VERSION: LYA-LGRP2-OVS 9.1.0.357
CUSTOM VERSION: LYA-L29-CUST 9.1.0.11 (AUSC636)
OEMINFOREAD: LYA-L29-PRELOAD 9.0.0.1(C636R2)
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i have the same problem
Hello, same issus here
1st thing i would try is to contact huawei support chat.
now the more extreme diy method may break safetynet and stop things such as google pay from working. if you decide to try it, you have been warned.
you can manually force an update through USB OTG.
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it has the information you need to get it to work.
for the greatest chance of success, you want a firmware with the same cust/preload region as yours
(in the case of the OP this would be C636R2)
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you can use an app called "firmware finder for huawei" (play store) which you can use to find and download the full firmware file.
also, forcing the incorrect firmware will brick your phone. very easy to get confused and try to force a firmware meant for another model completely.
theoretically L29 and L09 variants should both work, however your dual sim functionality might stop working.
I did this sort of thing last year and haven't looked at it for a very long time, just giving some info which may get you on the path if you wish to try the diy method.
ANyone tried? how was it? does it work
xeroxide said:
1st thing i would try is to contact huawei support chat.
now the more extreme diy method may break safetynet and stop things such as google pay from working. if you decide to try it, you have been warned.
you can manually force an update through USB OTG.
there is a thread on this forum called "How to update Huawei Mate 20 Pro With Locked Bootloader"
it has the information you need to get it to work.
for the greatest chance of success, you want a firmware with the same cust/preload region as yours
(in the case of the OP this would be C636R2)
note, this can only be done with full firmware files, not updates.
you can use an app called "firmware finder for huawei" (play store) which you can use to find and download the full firmware file.
also, forcing the incorrect firmware will brick your phone. very easy to get confused and try to force a firmware meant for another model completely.
theoretically L29 and L09 variants should both work, however your dual sim functionality might stop working.
I did this sort of thing last year and haven't looked at it for a very long time, just giving some info which may get you on the path if you wish to try the diy method.
Click to expand...
Click to collapse

Huawei BLA-L29 rollback to unlock bootloader

Hey there! First post.
Before Huawei stopped giving unlock codes in 2018 I got mine but I never unlocked because of warranty. Now I really want to unlock but from EMUI 9 onwards (I have 10.0.0.202(C432E9R1P3) installed) they removed the possibility of unlocking via the
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Thanks in advance

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