Does Unlocking Bootloader disable OTA updates? - Huawei P20 Pro Questions & Answers

I've gone through the process of entering my IMEI and serial number in the EMUI bootlocker website and its given me a code.
I haven't yet done any further steps including the adb commands required to remove the blootlock.
However I can now see on the MT Huawei Firmware update list that there is a new update (128) and I'm on (120b)
I've tried using the VPN option to force the update to obtain the firmware from its own servers to no avail.
The firmware checker simply states the firmware isn't compatible with device.
..has somehow simply registering caused it to be blocked for future updates?
##Secondly##.. Does continuing the process and using abd unblock commands cause it to no longer work with OTA?
Or is it only when and if you root it - that OTA can not work? (or does it work)
Quite confused and would really appreciate any advice as ideally I would like to keep OTA, but have root at sometimes with the hope that I could disable root anytime a OTA updates comes available and then re-enable after.
Any advice greatly appreciated )

dgoncalves81 said:
I've gone through the process of entering my IMEI and serial number in the EMUI bootlocker website and its given me a code.
I haven't yet done any further steps including the adb commands required to remove the blootlock.
However I can now see on the MT Huawei Firmware update list that there is a new update (128) and I'm on (120b)
I've tried using the VPN option to force the update to obtain the firmware from its own servers to no avail.
The firmware checker simply states the firmware isn't compatible with device.
..has somehow simply registering caused it to be blocked for future updates?
##Secondly##.. Does continuing the process and using abd unblock commands cause it to no longer work with OTA?
Or is it only when and if you root it - that OTA can not work? (or does it work)
Quite confused and would really appreciate any advice as ideally I would like to keep OTA, but have root at sometimes with the hope that I could disable root anytime a OTA updates comes available and then re-enable after.
Any advice greatly appreciated )
Click to expand...
Click to collapse
It is NOT related with unlocked bootloader or rooted firmware.
It's related with emui 8.1 version whitch is NOT supported by FirmwareFinder.
So basically VPN or Proxy wont work with that.
Another thing: the firmwares listed on FF aren't approved at appearance date. This means that we must wait a bit for approval, and after that can FF download the selected firmware (again, emui 8.1 is not supported).
If you are in hurry with flashing the new firmwares, you can via TWRP (methods described on forum).
BUT be aware, that even with that you can brick your phone
(trust me: after 2 days, when i brought my phone, it was hardbricked... i haven't other choice but RMA, and obviously they have changed the phone. SO be very careful.)

tamaskurti said:
It is NOT related with unlocked bootloader or rooted firmware.
It's related with emui 8.1 version whitch is NOT supported by FirmwareFinder.
So basically VPN or Proxy wont work with that.
Another thing: the firmwares listed on FF aren't approved at appearance date. This means that we must wait a bit for approval, and after that can FF download the selected firmware (again, emui 8.1 is not supported).
If you are in hurry with flashing the new firmwares, you can via TWRP (methods described on forum).
BUT be aware, that even with that you can brick your phone
(trust me: after 2 days, when i brought my phone, it was hardbricked... i haven't other choice but RMA, and obviously they have changed the phone. SO be very careful.)
Click to expand...
Click to collapse
Via twrp? What method? Depending on the device type you would have to debrand first

dladz said:
Via twrp? What method? Depending on the device type you would have to debrand first
Click to expand...
Click to collapse
The method I was referring is with HuRUpdater.
HuRupdater Thread

tamaskurti said:
The method I was referring is with HuRUpdater.
HuRupdater Thread
Click to expand...
Click to collapse
Have you used this before? On the P20 Pro?
Only reason i ask is the P20 Pro is not listed on the supported devices and as i said you would need to have the correct firmware for your device, the newer firmwares are made for the European version of the device L29 not L09, so providing you're on L29 and it's the correct firmware then it should work, but i would not like to be the person to crash test this.
I'm on the L09 which doesn't take L29 firmwares unless i debrand and then try it.

I have CLT-L29C432B128. (I have updated with hurupdater since the 128 fw is not yet approved from firmware finder)
I thinking on try flashing cn firmware.

tamaskurti said:
It is NOT related with unlocked bootloader or rooted firmware.
It's related with emui 8.1 version whitch is NOT supported by FirmwareFinder.
So basically VPN or Proxy wont work with that.
Another thing: the firmwares listed on FF aren't approved at appearance date. This means that we must wait a bit for approval, and after that can FF download the selected firmware (again, emui 8.1 is not supported).
If you are in hurry with flashing the new firmwares, you can via TWRP (methods described on forum).
BUT be aware, that even with that you can brick your phone
(trust me: after 2 days, when i brought my phone, it was hardbricked... i haven't other choice but RMA, and obviously they have changed the phone. SO be very careful.)
Click to expand...
Click to collapse
Thanks for the advice!
So the list if updates that firmware finder shows are upcoming updates - rather than being released for offical OTA distrubtion from the date listed?
If firmware finder gets it first I'm wondering if you know generally when the OTA updates start to be pushed out via the OTA update system?

I don't know.
Generally about 2-3 weeks (maybe less).

Related

Updating to stock Nougat (EVA-L19-C185B)

Okay guys I'm tired. I don't understand why it won't works : I have a brand new Huawei P9, it's a Dual Sim (L19-C185). It's not branded. My current firmware version is EVA-L19-C185B170. I don't want to root or unlock if possible, I just want EMUI 5.0. I've tried to install it (mostly firmware B385, no particular reason) by using the firmware finder, by using HiSuite and by using the "dload" method. None of it worked, it always fail when it "verifies package", or when I use the "dload" method, just after (it tells that the package I've downloaded is not compatible with the version currently installed).
I don't know what to do anymore. Why do I even don't have the OTA ? Is it still deploying ? Do you see what I'm doing wrong ?
For information I've more or less followed this tutorial : http://ministryofsolutions.com/2017...gat-b385-update-emui5-middle-east-africa.html
Note : I didn't use the absolute last version of HiSuite, but almost. Can it come from there ? When I install using Hisuite and Huawei Adapter, Huawei Adaptater warn me that it coudl brick my device since I checked "custom rom" (which make me thinks that it should force the flash), HiSuite tells me that it installed successfully, but my phone just says that the package is incorrect. But it IS the correct package. I did all of this for numerous other brands, but now I don't know what to do anymore.
So, I sent the phone back.
I realized that, even if the firmware was EVA-L19-C185B170, it was actualy a TL00. I think that TL00 is specific to China Mobile (or perhaps other Chinese providers) and that they haven't develloped an official rom for this phone. On my phone, EVA-L19 was somehow flashed, and the bootloader was locked, which means that the vendor successfuly crossflashed a rom that was not intented for this model, without unlocking the phone, or by unlocking and then relocking the phone. If I believe this forum, both methods are currently unknown. However the fact that I had this phone prove that at least one of those two methods is possible. Perhaps more information can be found on the Chinese web. Knowing none of these method, and being unable to update (the low-level software somehow know that my phone is an LT00, and won't update to a firmware which isn't. No LT00 Nougat seems to exists. So I was ****ed) and not willing to unlock the bootloader to try flash without any garantee (I think that hardware are the same, so flashing a L19 Nougat should be fine however), I send back the phone, and bought another, which seller garanteed me it was a L19.
If you run into the same issues, Good luck.
Same Issue with Me
I have been trying to find an upgrade. And my phone is on same firmware as you mentioned. Even I have bought it online from China, and i suppose I am facing the same problem, about it being an original TL00, but tweaked to L19.
I cant send the phone back as i reside in another country!!
Any possible solutions you may suggest?
Can anyone please help with the same..!!

Advice P10 stuck on March 2017

Hi,
End of January I bought a P10 SIM free from a major UK retailer.
It is stuck on March 1st 2017 updates, with no updates available.
I contacted Huawei support - they say my IMEI should be on B162. But I get no update OTA, and even through the HiSuite app it says I have latest.
They said I have to send the phone back for 2 weeks and they will factory reset and upgrade. This is unbelievable to me.
They told me if I use the firmware finder app I would void warrenty. But I thought if I do not root and install the authorised firmware version (B162) then they wouldn't know or it wouldn't be a problem.
I am a little confused by the number of different firmwares in the app, many with the same version number. How do I know which to use? What is the difference between OTA-MF and FullOTA-MF (from the sizes I guess full is full and other is incremental).
Will any of them get me back on the official upgrade path, or if I do this will it be manual updates forever from now on?
Do I have to root to install the firmware from firmware finder (I think not?)
I always thought people who focussed on stock android were silly, and I quite like EMUI but I am really regretting buying Huawei now.
thrope said:
Hi,
End of January I bought a P10 SIM free from a major UK retailer.
It is stuck on March 1st 2017 updates, with no updates available.
I contacted Huawei support - they say my IMEI should be on B162. But I get no update OTA, and even through the HiSuite app it says I have latest.
They said I have to send the phone back for 2 weeks and they will factory reset and upgrade. This is unbelievable to me.
They told me if I use the firmware finder app I would void warrenty. But I thought if I do not root and install the authorised firmware version (B162) then they wouldn't know or it wouldn't be a problem.
I am a little confused by the number of different firmwares in the app, many with the same version number. How do I know which to use? What is the difference between OTA-MF and FullOTA-MF (from the sizes I guess full is full and other is incremental).
Will any of them get me back on the official upgrade path, or if I do this will it be manual updates forever from now on?
Do I have to root to install the firmware from firmware finder (I think not?)
I always thought people who focussed on stock android were silly, and I quite like EMUI but I am really regretting buying Huawei now.
Click to expand...
Click to collapse
depending on your CUST code you'll have to claim contact to your brand... I mean if your rom is "customized" by the carrier is not only Huawei but also the carrier who has to work on the update the other option depending on your model is to Debrand and change the firm to L29C432 and get the updates of the official but be careful about bricks or Sim detection problems...read all threads talking about debranding and go ahead if you feel confident to avoid a brick
jcalderonv74 said:
depending on your CUST code you'll have to claim contact to your brand... I mean if your rom is "customized" by the carrier is not only Huawei but also the carrier who has to work on the update the other option depending on your model is to Debrand and change the firm to L29C432 and get the updates of the official but be careful about bricks or Sim detection problems...read all threads talking about debranding and go ahead if you feel confident to avoid a brick
Click to expand...
Click to collapse
Thanks. It is retail SIM free non-branded. Ie just bought from a store nothing to do with any carrier. I don't really understand the difference between L29 and L09. Mine shows L09 at the moment. Are they different hardware versions?
thrope said:
Thanks. It is retail SIM free non-branded. Ie just bought from a store nothing to do with any carrier. I don't really understand the difference between L29 and L09. Mine shows L09 at the moment. Are they different hardware versions?
Click to expand...
Click to collapse
Hardware is (almost) the same. L29 allows to use both sims in the sim tray.
Just to update.
I used Firmware Finder to install B186A update. Worked perfect and have January 2018 security patch level.
The more recent B185 firmwares are rollback firmwares for downgrading from Oreo. Check the release notes carefully and make sure you chose an upgrade firmware (not a rollback firmware) that is authorized for your IMEI. (For me B186 was not approved but B186A was).
None of the Oreo firmwares were authorized for my device.
thrope said:
Just to update.
I used Firmware Finder to install B186A update. Worked perfect and have January 2018 security patch level.
The more recent B185 firmwares are rollback firmwares for downgrading from Oreo. Check the release notes carefully and make sure you chose an upgrade firmware (not a rollback firmware) that is authorized for your IMEI. (For me B186 was not approved but B186A was).
None of the Oreo firmwares were authorized for my device.
Click to expand...
Click to collapse
Were you able to simply download the firmware from Firmware Finder and install directly? Were there any other steps you had to follow to do this correctly?
Reason i ask is that i am in same situation as you were. Purchased Sept 2017 via O2 in the UK, no updates at all (still on L90C432B113), contacted Huawei and O2 about Oreo with no possible updates and showing March 2017 Security Patch Level.
Getting sick of waiting and looking to move to Oreo as soon as possible.
Any tips would be helpful - thanks in advance.
gc1984 said:
Were you able to simply download the firmware from Firmware Finder and install directly? Were there any other steps you had to follow to do this correctly?
Reason i ask is that i am in same situation as you were. Purchased Sept 2017 via O2 in the UK, no updates at all (still on L90C432B113), contacted Huawei and O2 about Oreo with no possible updates and showing March 2017 Security Patch Level.
Getting sick of waiting and looking to move to Oreo as soon as possible.
Any tips would be helpful - thanks in advance.
Click to expand...
Click to collapse
Sorry for the delay getting back to you.
I was on B120 with a Serbia certified P10.
I installed B186A from Firmware Finder. (at the time I did it B185 was not approved). Its important to do the check with the IMEI number within the app to see if the firmware is signed for your device. I did the proxy method, where you set the proxy, pause download at 5%, unset proxy and it worked very smoothly.
I think the main thing is to make sure you chose an upgrade firmware and not a rollback firmware. They are not labelled clearly and the only difference is in the readmes so check carefully. There are a few more recent B185 firmwares which I found confusing, but they are for people who need to rollback from orea (and so reset the device).
A couple of days later I got Oreo B365 over the air (not through the app). Upgrade went very smooth.
Big improvement in battery life and overall performance better all round.
With Project Treble in place I hope updates will be quicker, and maybe even easy to install stock one day.

Version downgrade

I have searched everywhere but I didn't find a reply to my question.
A couple of days ago I have updated my phone LLD-L31 to the version 8.0.0.132 through Firmware Finder (it worked for me with proxy method) then I decided to revert back to the previous version 8.0.0.131. So I started reading guides to install a firmware on Huawei/Honor devices, I have downloaded the FullOTA package version 8.0.0.131 with Firmware Finder, placed it in the folder dload on my SDcard and started the intstallation in the project menu (accessible digiting *#*#2846579#*#* in the dialer), it started but suddenly it ended with a message "installation failed".
So my question is: how can i revert to the previous version of the software (or to the out of the box firmware installed on my device)?
karmakey said:
I have searched everywhere but I didn't find a reply to my question.
A couple of days ago I have updated my phone LLD-L31 to the version 8.0.0.132 through Firmware Finder (it worked for me with proxy method) then I decided to revert back to the previous version 8.0.0.131. So I started reading guides to install a firmware on Huawei/Honor devices, I have downloaded the FullOTA package version 8.0.0.131 with Firmware Finder, placed it in the folder dload on my SDcard and started the intstallation in the project menu (accessible digiting *#*#2846579#*#* in the dialer), it started but suddenly it ended with a message "installation failed".
So my question is: how can i revert to the previous version of the software (or to the out of the box firmware installed on my device)?
Click to expand...
Click to collapse
You should have an option to downgrade in the about section/ the update menu of your phone if you did it right.
Otherwise you may need to use the HuRupdater Method.
Fredin_ said:
You should have an option to downgrade in the about section/ the update menu of your phone if you did it right.
Otherwise you may need to use the HuRupdater Method.
Click to expand...
Click to collapse
Thanks for your reply!
I don't have this option, but if I remember well I hadn't it also in the previous version of the firmware.
So i can't install a previous version of the firmware simply downloading it an putting into dload folder of the SDcard?
karmakey said:
Thanks for your reply!
I don't have this option, but if I remember well I hadn't it also in the previous version of the firmware.
So i can't install a previous version of the firmware simply downloading it an putting into dload folder of the SDcard?
Click to expand...
Click to collapse
Can you please specify why do you want to roll back?
Because most people just wanna upgrade to a newer version.Newwr versions will have better stability so it's recommended to keep the latest version unless you have some bugs.
I honestly don't know why the dload method doesn't work, seems that it doesn't work for most people.
I think you'll be able to roll back using HuRupdater. But that'll mean you'll have to unlock bootloader and flash twrp first. Then you can go all stock from there.
Here's a guide to the HuRupdater from @zxz0O0
https://www.google.co.in/amp/s/foru...lash-official-firmware-recovery-t3769279/amp/
Fredin_ said:
Can you please specify why do you want to roll back?
Because most people just wanna upgrade to a newer version.Newwr versions will have better stability so it's recommended to keep the latest version unless you have some bugs.
I honestly don't know why the dload method doesn't work, seems that it doesn't work for most people.
I think you'll be able to roll back using HuRupdater. But that'll mean you'll have to unlock bootloader and flash twrp first. Then you can go all stock from there.
Here's a guide to the HuRupdater from @zxz0O0
https://www.google.co.in/amp/s/foru...lash-official-firmware-recovery-t3769279/amp/
Click to expand...
Click to collapse
After installing the version 132 I asked the technical support through HiCare and they told me that installing firmware with Firmware Finder could void warranty so I decided to revert to the previous firmware and wait for regular OTA by Huawei.
karmakey said:
After installing the version 132 I asked the technical support through HiCare and they told me that installing firmware with Firmware Finder could void warranty so I decided to revert to the previous firmware and wait for regular OTA by Huawei.
Click to expand...
Click to collapse
I'm not sure but I think you are on the latest build for your varient now so you won't be getting any updates untill a next build comes in.
I don't think you'll be able to roll back without the firmwares from firmware finder as you don't have an option to roll back.
The best option now would be to just wait for the next official build(might come soon as a small ota which has security patches) and then check if you are facing any issues installing which you won't as you are not rooted and dosent have an unlocked bootloader. So don't worry ?
Fredin_ said:
I'm not sure but I think you are on the latest build for your varient now so you won't be getting any updates untill a next build comes in.
I don't think you'll be able to roll back without the firmwares from firmware finder as you don't have an option to roll back.
The best option now would be to just wait for the next official build(might come soon as a small ota which has security patches) and then check if you are facing any issues installing which you won't as you are not rooted and dosent have an unlocked bootloader. So don't worry
Click to expand...
Click to collapse
Version 8.0.0.133 with July security patch just arrived and installed through official OTA!
karmakey said:
Version 8.0.0.133 with July security patch just arrived and installed through official OTA!
Click to expand...
Click to collapse
Good to hear you are up and running fine ?
Want to downgrade my honor 9 lite
After some update the theme engine crashed. Themes can no longer change the notiifcation bar icons and shortcuts icons.
Downgrading version Problem
I used firmware finder and dns method to downgrade my honor 9 lite and while i register update on firware finder and opens hisuite for update it is saying u r on already the latest version
Plz help me with downgrading my version 9 to 8

Mate 10 Pro Unable to update firmware OTA or using eRecovery / FunkyHuawei

Hi
I'm unable to change the firmware on my BLA-L29 C432 B142 May security patch (rebranded from C636 about 6 months ago).
Checking OTA just says 'no updates available' and if I try to update via FunkyHuawei using eRecovery it downloads but after 'verifying' it moves on to 'recovery system running' and then errors with the message 'recovery failed' when it gets to 1%.
I've tried quite a few things to try and get something to move on, but it seems like I'm stuck on an old version of firmware and no way to change it. I need a new plan.
I've tried (with lots of factory resets and wiping cache inbetween):
- OTA updates - always says no update available.
- Via FunkyHuawei:
- Reflash same firmware (eRecovery fails during 'recovery system running')
- Reflash newer or older firmare in same region (eRecovery fails during 'recovery system running')
- Change region, reflash newer or older firmware in same region (eRecovery fails during 'recovery system running')
- Use unbrick tool to flash same or different firmware in both same and different regions (unbrick tool completes but firmware version always stays the same in about phone, the android security patch date changes though, but eRecovery won't let me reflash anything afterwards as eRecovery fails during 'recovery system running')
- The last OTA update I got was C432 .137. When everyone else was getting .145 OTA I got Firmware Finder to move me from .137 to .142.
Has anyone got any ideas on what to do next? I don't want to be stuck on the same firmware version and security patch forever.
Other than the FunkyHuawei rebrand about 6 months ago from C636 to C432, the phone is standard (no attempt to unlock bootloader, root).
I was thinking of:
- Unlock bootloader using DC unlocker (from what I've read this might still work as I'm on B142 which has a May security patch)
- Flash TWRP
- Flash a custom ROM
- Try and restore back to stock
- Possibly rebrand back to factory original C636 as there seem to be a few threads about rebranded phones not getting updates promptly, but I can't see anyone else who is getting eRecovery failing no matter what they do and no way to change firmware. I have already tried rebranding back to C636 via FH, but can't, as eRecovery fails at the same point when trying to flash the C636 firmware.
Funky should always work to update, check that DNS is correct when you enter that test site.
- Unlock bootloader using DC unlocker (from what I've read this might still work as I'm on B142 which has a May security patch)
Click to expand...
Click to collapse
This will work. I have downgraded and tested it
You could do this:
Get unlock code
Unlock bootloader
Flash TWRP (https://forum.xda-developers.com/mate-10/development/huawei-mate-10-pro-twrp-3-2-1-0-t3769904)
Download firmware update.zip, public and hw zip from http://pro-teammt.ru/firmware-database/
Update to the version you want using HuRUpdater (https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279).
You will stay bootloader unlocked now though, but the rest is stock.
ante0 said:
Funky should always work to update, check that DNS is correct when you enter that test site.
Click to expand...
Click to collapse
The DNS is fine and I can load the test sites, eRecovery gets info and downloads the firmware labelled "FunkyHuawei" and the size is around 3GB. After taking a few minutes to download, the eRecovery moved on to 'verifying package', that completes, it moves on to 'recovery system running' and after it gets to 1% it says 'recovery failed'.
ante0 said:
This will work. I have downgraded and tested it
You could do this:
Get unlock code
Unlock bootloader
Flash TWRP (https://forum.xda-developers.com/mate-10/development/huawei-mate-10-pro-twrp-3-2-1-0-t3769904)
Download firmware update.zip, public and hw zip from http://pro-teammt.ru/firmware-database/
Update to the version you want using HuRUpdater (https://forum.xda-developers.com/honor-9/development/tool-flash-official-firmware-recovery-t3769279).
You will stay bootloader unlocked now though, but the rest is stock.
Click to expand...
Click to collapse
I will try this, anything to get me out of the hole I seem to be stuck in as all methods I've tried so far rely on eRecovery. Thankyou for all of the links.
When using HuRUpdater does it have to be in the same region, or can I rebrand at the same time?
Thasscas44 said:
The DNS is fine and I can load the test sites, eRecovery gets info and downloads the firmware labelled "FunkyHuawei" and the size is around 3GB. After taking a few minutes to download, the eRecovery moved on to 'verifying package', that completes, it moves on to 'recovery system running' and after it gets to 1% it says 'recovery failed'.
I will try this, anything to get me out of the hole I seem to be stuck in as all methods I've tried so far rely on eRecovery. Thankyou for all of the links.
When using HuRUpdater does it have to be in the same region, or can I rebrand at the same time?
Click to expand...
Click to collapse
HuRUpdater can only handle same region updates as far as I know.
You can use HWOTA to rebrand, but mankindtw (original author) has since edited the thread as he thought his tool bricked devices. But it was firmware that caused it.
And I can't remember the exact steps... You have to flash twice though, first to rebrand (example C636) and then to update to the same rebranded (C636) firmware.
https://mega.nz/#!oeATEQQb!qiP3mYlQQgZYlaS3dbY_QCwNJ-urTKyLQ2zKOA9KP8g
You could use FHRebrand tool, but it will change your bootloader unlock code so you'd have to use HCU client (DC-unlocker) twice to get it.
Also, before flashing anything, check xloader with this tool: https://forum.xda-developers.com/mate-10/how-to/beware-bla-l29c432b147-t3817241
For now, stay on XLOADER 01 firmware. We don't know if Huawei will change to 02. Going from 02 to 01 will end in a hard brick.
B142 is 01 so you're safe now
Thanks to your advice, I have a plan now. And good to know about the xloader stuff, that could have ruined my day.
I'm going to:
1. Get bootloader code [update: done using dc-unlocker, confirmed working on C432 .142]
2. Flash TWRP
3. Put same region and slightly downgraded version of firmware on to a USB and flash with HuRUpdater (assuming it needs to be put on a USB OTG stick as the M10Pro doesn't have an SD card). I intend to use the downgraded version so I can see the version successfully change in "about phone"
4. Rebrand using FH tool (if there's less chance of bricking than HWOTA) and keeping an older firmware
5. Hopefully it works, and [after getting the bootloader code again from dc-unlocker in case I need it in future] I will be able to update via OTA to latest official firmware
Hopefully starting again completely will overwrite whatever it is that's getting me stuck.
Thanks to @ante0 I got out of the hole I was in.
From what I've tested, there seems to be an inability to update OTA from a rebranded BLA-L29 432 running 137 or 142.
Here's what I did.
1. Unlocked bootloader, flashed twrp, flashed downgraded 137 version of C432 with hrupdater. Success. No offer of an OTA update though so still stuck on old version.
2. Ran FH rebrand tool to change region to the factory original C636. eRecovery failed at the same stage as before. Fail.
3. Kept region as C636, unlocked bootloader and flashed twrp again. Flashed April version of C636 firmware using hrupdater, twice. Success.
4. Immediately on boot up phone offered to update OTA to the latest version of C636 firmware. Success.
It seems that the phone wouldn't offer an update OTA if on rebranded C432 and running 137 or later, but did offer OTA when it was back on C636. I live in Europe, but will keep the 636 region if it means I get OTA, else I can't pass the phone on.
Now to relock the bootloader so banking apps work. Plan to use the fastboot relock command followed by dc unlocker relock tool. Hoping not to brick at the last stage!

Update EVA-L09C900B182

I have a Huawei P9 that doesn't seem to receive updates.
EMUI 4.1.1
Build: EVA-L09C900B182
Andriod: 6.0
I have tried using firmware finder but I always get checksum failed before it passes 1%.
I had a look through the Forums and it seems that people recommend rebranding though that was in 2017.
I was wondering if there is any easy way to update?
I am a noob so i want to try avoid rooting and rebranding if possible.
Has anyone managed to update this?
2 years later and I'm still trying...
focussss said:
Has anyone managed to update this?
2 years later and I'm still trying...
Click to expand...
Click to collapse
For c900 there is no newer firmware.
Flashing anything else than c900 means rebranding - but rebranding requires unlocking Bootloader (not 'rooting')
So wandering, what are you really trying to do for two years?!
- Unlock Bootloader (4 Euros):
https://www.dc-unlocker.com/
- Rebrand properly to be able to update to Nougat eg EVA-L09c432b504:
https://forum.xda-developers.com/showpost.php?p=72153575&postcount=2
I followed that guide but now my phone is stuck on "Type the password to decrypt storage" when I enter my Google password it says it's correct but data on my phone is corrupted. Any ideas?
focussss said:
I followed that guide but now my phone is stuck on "Type the password to decrypt storage" when I enter my Google password it says it's correct but data on my phone is corrupted. Any ideas?
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Click to collapse
Are you talking about TWRP asking for pass or Android?
If Android, on which firmware are you, what was the last step you performed?
Also, make sure you used TWRP for MM, not for Nougat - since you were on c900 MM when you started with rebranding to c432 (?)
Btw, you unlocked the Bootloader?
Thanks for the quick response and all your assistance. I managed to finally boot into EVA-L09C432B182 and will write what I did in the rebranding post for others who run into this issue. I still have no updates on L09C432B182 though.
focussss said:
Thanks for the quick response and all your assistance. I managed to finally boot into EVA-L09C432B182 and will write what I did in the rebranding post for others who run into this issue. I still have no updates on L09C432B182 though.
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Click to collapse
For OTA you must have a valid SIM card and WiFi - check manually to the System Update to trigger checking for an update
You can also try with HiSuite (PC) - latest versions of HiSuite have an option at the bottom to update the firmware
See:
https://huaweiflash.com/how-to-flash-huawei-stock-firmware-all-methods/
You can also update by DLOAD (read the guide above), you must download FullOTA-MF-PV (must be PV), like b360, from Firmware Finder
There is also HWOTA method, see:
https://forum.xda-developers.com/showpost.php?p=75787156&postcount=3

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