yashsingh1/xdaforums huggingface dataset:
[Huawei Mediapad M3 Questions & Answers] tim_h:
Yeah, I agree that having TWRP would give you a lot of options, in particular take a full nandroid backup before trying the rollback.

So maybe the best strategy would be

1. unlock bootloader

2. install TWRP

3. take a full nandroid backup

4. reinstall stock recovery

5. try the rollback

6. either success, then take it from there, or restore nandroid backup

Question: In the state your tab was in, could you have unlocked the bootloader if you had already gotten the unlock code from Huawei? If so, one could even relock the bootloader before step 5.

Drawback: I guess getting the unlock code from Huawei voids warranty?
[Huawei Mediapad M3 Questions & Answers] 30adi:
Unlocking bootloader will erase device.
[Huawei Mediapad M3 Questions & Answers] tim_h:
Yeah, true, thanks for pointing that out. That's another drawback I hadn't thought about.

But at least I would have a working nandroid backup of stock B303 that I could restore in case the rollback bricks my tab.

By the way, would that also be an option to go to official B307: If someone with stock B307 made and shared a nandroid backup?

I hate it that I have to invest so much time into just updating my stock tablet. For everybody else who got B303 through FirmwareFinder, the B307 update just worked? Why doesn't it for me? :mad:
[Huawei Mediapad M3 Questions & Answers] 30adi:
Worked for me without problems. I've got B307 as OTA, coming from B303 flashed with firmware finder.

I can't share a nadroid backup, as my tablet is not rooted.
[Huawei Mediapad M3 Questions & Answers] tmihai20:
Did the 4G/LTE version got a new OTA? Because my Mediapad is still on November security patch.
[Huawei Mediapad M3 Questions & Answers] nospherato:
Getting the code voids the warranty, that's right, at least you get this information everywhere.

As someone mentioned in my other thread it should not be possible to unlock the bootloader in this case, because you need to switch an option in the developer settings first (which of cause is not possible anymore).

I suppose, at least IF they can repair my tab, the first thing I will do is to unlock the bootloader...
[Huawei Mediapad M3 Questions & Answers] tim_h:
I think B307 is the newest one. But I am still on B303 (security patches from May 2017). :(

Still not sure whether I should unlock the bootloader before trying the rollback. At least if the rollback bricks my tab I can blame Huawei and hope they fix it free of charge. Once I unlock it I am on my own ...
[Huawei Mediapad M3 Questions & Answers] tmihai20:
I would recommend you to keep it locked. Why do you want to rollback? Some tablets did not get the first OTA, but they got the second.
[Huawei Mediapad M3 Questions & Answers] tim_h:
Yeah, I am also inclined not to unlock. I want to rollback because I am on B303 installed with FirmwareFinder, but the B307 versions offered on FirmwareFinder fail to install (although they check out as suitable and also validate correctly after download). So I fear that something with my B303 is not "official", maybe I am on some beta version. Rolling back to Marshmallow and then taking the official update path from there should work, hopefully.

I will wait until 18th February, though, because that is when nominally the rollout of the B307 update should be completed.
[Huawei Mediapad M3 Questions & Answers] nospherato:
[MENTION=3838420]tim_h[/MENTION]

As promissed my feedback:

I suppose my pad really had some kind of hardware error. The service center tried to repair it, but couldn't.

Today I received a brandnew m3 via warrenty from the service center.

(running b012 but still on EMUI 4.1.3)
[Huawei Mediapad M3 Questions & Answers] tim_h:
[MENTION=2082974]nospherato[/MENTION]: Thanks for the update. That's really good news, because

a) I guess then I should have no problems with a rollback, and

b) if I do have problems, it seems Huawei will help me out

So I will wait a few more days and if the B307 update is still not arriving, I will try the rollback. I will report here ...
[Huawei Mediapad M3 Questions & Answers] Kzyw:
I also have the 303 beta installed with FF and when restarting to install the full ote 307 it gives me an error like you .... Solution? Is it easy to download android 6 Marshmallow?
[Huawei Mediapad M3 Questions & Answers] tim_h:
Welcome to the club. :(

There is a rollback package available from Huawei. For the version with LTE (BTV-DL09C100) you first need to install

http://download-c1.huawei.com/download/downloadCenter?downloadId=94468&version=380483&siteCode=de

followed by

http://download-c1.huawei.com/download/downloadCenter?downloadId=94472&version=380538&siteCode=de

A PDF with detailed instructions is included in the first download.

A similar rollback package is available for the WiFi-only version (BTV-W09), but I do not have the link.
[Huawei Mediapad M3 Questions & Answers] tmihai20:
For the WiFi version I think these are the links. First this one http://consumer-tkb.huawei.com/tkbapp/downloadWebsiteService?websiteId=670897 and then the full firmware http://consumer-tkb.huawei.com/tkbapp/downloadWebsiteService?websiteId=671373.

By going to this link you can switch between the WiFi and the 4G/LTE version easily. They still have the downgrade packages https://consumer.huawei.com/it/support/tablets/mediapad-m3-8/. The German version also still has them https://consumer.huawei.com/de/support/tablets/mediapad-m3-8/.
[Huawei Mediapad M3 Questions & Answers] Kzyw:
It's easy or not?

I don't experience with this, is my first Huawei

Any link where this is talked about?

Thanks!
[Huawei Mediapad M3 Questions & Answers] tmihai20:
[MENTION=6052529]Kzyw[/MENTION]: all packages have a pdf with instructions. Use the smaller package first and then the big one that has over 1 GB. It uses the SD card method to downgrade.
[Huawei Mediapad M3 Questions & Answers] tim_h:
Update: I applied the Marhsmallow rollback on my BTV-DL09 and it worked flawlessly. So [MENTION=2082974]nospherato[/MENTION] you probably indeed had some hardware issue with your specific tablet.

After the downgrade to B009, it immediately found and installed the B303 update. Also restoring the backup made with the Huawei app worked surprisingly well.

However, I am not currently offered the B307 update. Strange. Has the rollout not yet completed for all tablets? That seems a very long rollout phase (it started somewhere in November or early December).

Now I can either wait or try to apply the OTA through FirmwareFinder. But given that FirmwareFinder brought me to a state from which OTAs were not working properly, I'd rather wait for the normal OTA.

Is there anybody else on B303 and not being offered the B307 yet?
[Huawei Mediapad M3 Questions & Answers] trashcooky:
I am on 303 and no sign if further updates for me.
[Huawei Mediapad M3 Questions & Answers] tim_h:
Interesting. Did you update to B303 via regular OTA or through FirmwareFinder?

Edit: Ok, I am fed up with waiting for the B307 rollout to reach my tablet. What good is it to have an update with security patches from November 6th 2017 to reach your tablet no earlier than March 2018? I really don't get Huawei's update policy! :(

The good news is that the update to B307 through FirmwareFinder (using the small, 500 MB package) worked just fine. This means that indeed I had previously ended up with some beta version of B303 that was not updateable any more. Luckily, the rollback to Marshmallow B009 solved this.

So my personal summary: Updating through FirmwareFinder can be dangerous if things are in a state of flux and there are several packages for the same version around. You might end up picking the wrong one, leaving you on some beta version that cannot be further updated through an OTA. But if the update has been out for months (as was the B307) with just one unique version, I think it is safe to go through FirmwareFinder. And in fact I am not very optimistic that we will get further updates after B307. :(
[Huawei Mediapad M3 Questions & Answers] trashcooky:
Yes, I got 303 via OTA 29th July 2017 and had nothing since.

When I check, systems is up to date - via OTA
[Huawei Mediapad M3 Questions & Answers] elcidroyale:
I'm on C100B006 & of course updater does not show any updates. Just spent some hours reading all of this thread. My understanding is to get to Nougat, I need to go the path of B009 - B010 - B303. Well I do not see B009 or 010 on FF. Next number after B006 is 302. Where can I find either B009 or B010?

Or can I roll back to C900B300 which allegedly let's you update to any firmware # (accoding to: http://www.stechguide.com/downgrade-mediapad-m3-from-nougat-to-marshmallow/)?
[Huawei Mediapad M3 Questions & Answers] 30adi:
Do you have the 4G version of the tablet (BTV-DL09) or only WIFI version?
[Huawei Mediapad M3 Questions & Answers] tim_h:
I think you can update to B009 by downloading it from Huawei and then using the "force update" method as described in the instructions for the rollback procedure. Links are in post https://xdaforums.com/showpost.php?p=75570381&postcount=512

I think you should NOT install the C300B900 package, it is explicitly only foreseen to be installed over Nougat ROMs!

From B009 my DL09 tab (with LTE) then directly updated to B303 the official way. Only for the update to B307 I had to use FirmwareFinder.
[Huawei Mediapad M3 Questions & Answers] tim_h:
As this seems to be the most active thread: There is now an update to B308, EMUI version 5.0.2 available. I could install it just fine via FirmwareFinder coming from B307 on my DL09C100 (European LTE version) M3. The biggest benefit, I guess, is security patch level February 2018.
[Huawei Mediapad M3 Questions & Answers] Rhadamanthis:
i trying now

thanks flashed ;)
[Huawei Mediapad M3 Questions & Answers] tmihai20:
I got the OTA to B305 on my WiFi only model. It does not even show in Firmware Finder yet. Just like last time, Firmware Finder got it pretty late.
[Huawei Mediapad M3 Questions & Answers] tim_h:
For me the update was not shown in the regular update dialogue. It was the same for B307: Although that was released in November 2017, it did not show up even in February 2018. No idea what Huawei is doing there...
[Huawei Mediapad M3 Questions & Answers] 30adi:
BTV-DL09 updated to B308 via FF :)
[Huawei Mediapad M3 Questions & Answers] jkissane:
That appeared for me as only yesterday on a wifi only version although it was on FF for a few weeks but it said it wasn't compatible so I didn't try installing it.
[Huawei Mediapad M3 Questions & Answers] tmihai20:
[MENTION=2529089]jkissane[/MENTION]: it seems Huawei is not good at issuing updates. At least you did not get it months later, but a few weeks later.
[Huawei Mediapad M3 Questions & Answers] tmihai20:
I got an update to B308 for my WiFi Mediapad M3.
[Huawei Mediapad M3 Questions & Answers] tim_h:
Actually, firmware finder reports an update to B311 for the LTE version of the M3 (DL09C100B311). Unfortunately, the firmware check tells me that this update is not installable on my tablet - which is strange, as previous updates such as B310 reported installable and also installed just fine.

Did anybody succeed to install B311 via FirmwareFinder or regular update on the LTE version?
[Huawei Mediapad M3 Questions & Answers] tom.android:
Hello Hussainally, I'm in Bangkok. if you don't have unlock bootloader, you can't change oeminfo from Country:spcseas to EU. (BTV-DL09C209XXXX ---> BTV-DL09C100XXXX)
[Huawei Mediapad M3 Questions & Answers] Hussainally:
Oh really ..my bootloader is locked ..didn't think the instructions on earlier post said anything about ensuring bootloader to be unlocked ..anyways ..looks like the waiting game continues for me
[Huawei Mediapad M3 Questions & Answers] tom.android:
you can try to download and install this firmware (Manual inside) for lock bootloader. but your oeminfo don't change ,please backup your data first. [ click download then (HUAWEI MediaPad M3 Firmware 8 ( BTV - DL 09 , C100B009, EMUI4.1 + Android 6.0) http://consumer.huawei.com/it/support/search/index.htm?keywords=btv-dl09&t=SupportSearch ] but you can't backword to original firmware cause no official full firmware of c209.
[Huawei Mediapad M3 Questions & Answers] Hussainally:
So with this ..I will get to B010 and then can go to nougat?will I continue to get ota after that in future ?
[Huawei Mediapad M3 Questions & Answers] tom.android:
"So with this ..I will get to B010 and then can go to nougat?will I continue to get ota after that in future ?"

Not sure about receives OTA cause oeminfo not change from Country:spcseas to EU. but you can see (from FF) all c100 ota & full after force update with official DL 09 , C100B009. (Boot Loader remain lock ).
[Huawei Mediapad M3 Questions & Answers] burnt187:
Hi, can someone who successfully updated to 301 or 302 post a screenshot of "about the tablet" information? In addition did Nougat fix the problem that come is using the phone mode?

I have tryied the method via the hicare app but it did not work for me.. I have no option to select the early adapter setting under "service". Im on stock b009 with orig and locked bootloader. I never flashed root or anything else on this tablet.
[Huawei Mediapad M3 Questions & Answers] tom.android:
No solution for display phone mode. and How can i help you? I'm on BTV-DL09C100B302.

if you now on BTV-DL09C100B009 then use #15 .
[Huawei Mediapad M3 Questions & Answers] GSX-R Rider:
Succes

i did the update yesterday, using Firmware Finder.

I had BTV-DL09C100B009.

I first did the BTV-DL09C100B010, and after that BTV-DL09C100B302..

Works perfect. :good:
[Huawei Mediapad M3 Questions & Answers] nicolap8:
Don't use greatslon's ROMs! Period.

The best ROM that we have is the C100B009 available here.

You are searching for troubles!

The C233 ROMs are chinese ROMs. DON'T install it!

Completely WRONG! That package is if you want to go back, because they know that currently Nougat sucks!

Wrong! Huawei doesn't know nothing of TWRP.

If you want to remove the TWRP you must flash the original recovery image. Search xda for the Huawei Extractor and READ that forum!

It's well explained, eg in the Firmware Finder forum.
[Huawei Mediapad M3 Questions & Answers] xdaens:
Yeah seeing the « data » zip name it's chinese, i won't install it in the end. all i want is to install the official OTA nougat image for my european dl09 tablet ( i really need the nougat split screen resize feature) but i can't do it with the OTA/dload way because i have twrp.

i saw the post about removing twrp, it looks like a long way but maybe my only way now. right now i will read the post, it's just about using tools after all.

edit 2: it looks like at some point i need my stock rom, and i just found it here http://download-c1.huawei.com/download/downloadCenter?downloadId=94472&version=380538 « HUAWEI MediaPad M3 8 Firmware (BTV-DL09 ,C100B009, EMUI4.1+Android 6.0) 2017-03-30 ». i am downloading it, before trying the extractor method i will try to use it directly with twrp it may just works ^^
[Huawei Mediapad M3 Questions & Answers] nicolap8:
That package is not for TWRP.

That package is a FULL ROM: will format everything!

Follow suggestions...
[Huawei Mediapad M3 Questions & Answers] Flavio:
Wow, why does Huawei make it so difficult to install a stock ROM.

I had to make my Samsung SM-T813 tablet stock again and this was just a matter of downloading the correct Nougat firmware and flashing it with Odin, job done.
[Huawei Mediapad M3 Questions & Answers] xdaens:
Soooo, at this point i successfully rollbacked to Android 6 and the bluetooth is working again, at least i know i can recover my tablet « full stock » now.

As i previously tried with FF to upgrade to B010 without success, i decided to find (http://hwmt.ru/oth/HWFF/info/view.php?find_model=BTV	BTV-DL09C100B010) and download it.

The problem is that i have the same result as with FF, trying to apply B010 directly from recovery or using the *#*# menu will end in a « successful update » BUT the version showed remain B009...

I am still trying to figure what's wrong while i download B301 from the same site.
[Huawei Mediapad M3 Questions & Answers] Mujo2017:
You have to put the downloaded Update.app file in a folder "dload" on your micro sdcard.

Restart and hold both wol up+Down.
[Huawei Mediapad M3 Questions & Answers] xdaens:
That's what i did a dozen of times since yesterday, this time it's just this B010 update.app which is not working ^^ (the update is applying successfully but the version remain B009 )

I m trying the other version of FF right now, soon the result…
[Huawei Mediapad M3 Questions & Answers] Mujo2017:
Try to Download the b010 from FF. Then unzip it and move it to your sd card.

It Worked fine for me. Im on b302 right now.

B302 contians 2 update files. Updated first file, then delete all files on sdcard og update file 2.
[Huawei Mediapad M3 Questions & Answers] xdaens:
Soo, as the dload method for B010 was not working i decided to clean the dload folder and give another try to the FF method.

I found another version of FF not working the same way! the first FF was using the dload method (basically what i was doing manually), the other one was using the OTA-proxy method.

Using this second method, the stock OTA could detect the B010 update and started downloading, but for some reason it stuck around 49%, i had to trick the method to make it work, first you use the wifi-proxy to make it detect the update, you start the download, then you turn off the wifi to switch to LTE, you confirm that you want to use LTE to continue download, and it could go to 100%. Like after the first method, there was a reboot into recovery and the update installed, but then there was a difference, this time i had a second reboot with system optimization, and after another reboot i am finally in B010!

Currently i am using my trick again trying to install B301, i hope it will work and that i won't have again the bluetooth problem!

update here soon (it's longer to dl B301 which is 2.42GB).

---------- Post added at 11:39 PM ---------- Previous post was at 11:37 PM ----------

Yeah as i said before, it worked for me too, but my bluetooth wasn't working anymore in nougat. That's why i am giving a try by doing a rollback and sticking to version and procedure other people were successful with, that is B009->B010->B301

finally! B301 with bluetooth working! I lost a lot of time because of my previous twrp/root and because of the wrong version of FF, also i guess the rollback was really needed to clean out some system files (persistent even after all the factory resets…). As i like to live dangerously, tomorrow i will try to unlock+twrp+root this B301 version ^^ (if someone did it, tell me the result, it could save me some time ^^).

I will also make a new post, because all the links and procedures i found or used during all that work may be useful for others, and in a more readable way than all my edits haha
[Huawei Mediapad M3 Questions & Answers] Markken88:
With locked bootloader, I have tried what you wrote and successfully updated to Nougat. However, it was stuck with NRD90M test-keys. Any idea to solve? Thanks.
[Huawei Mediapad M3 Questions & Answers] teruhiko666:
Same thing happened to me so i decided to stick with B010
[Huawei Mediapad M3 Questions & Answers] Markken88:
How did you manage to rollback? I have tried but couldn't rollback. I was from BTV-DL09C209B009 with locked bootloader. Now stuck with Nougat, NRD90M test-keys. Thanks.
[Huawei Mediapad M3 Questions & Answers] crzycrkr:
I'm wondering how to do the rollback as well
[Huawei Mediapad M3 Questions & Answers] teruhiko666:
I download the B009 link from download section http://consumer.huawei.com/it/support/search/index.htm?keywords=btv-dl09&t=SupportSearch

The rollback firmware didnt work for me, so i decided to download the full rom for btv DL-09 HUAWEI MediaPad M3 8 Firmware (BTV-DL09 ,C100B009, EMUI4.1+Android 6.0)

2017-03-30

And update it using force update buy placing on dload folder on sd card
[Huawei Mediapad M3 Questions & Answers] crzycrkr:
I'm sorry, can you elaborate on that? Once you place it in the dload folder, what needs to be done to force update?
[Huawei Mediapad M3 Questions & Answers] Markken88:
What is your M3 region build number, BTV-DL09C100 or BTV-DL09C209? Mine is BTV-DL09C209. I tried to dload but failed at 17%.
[Huawei Mediapad M3 Questions & Answers] teruhiko666:
Once u place update.app on sd card on dload folder on external sd card, keep holding vol up+ vol down + power button until it reboot then automatic force update.

I forgot to check the original build number, i will tell you when i got home tonight bcoz i havent got the box with me now, but after the update now my build number become dl09c100b010 ever since

When i try using *#*# method and check country vendor info it says hw and spceas
[Huawei Mediapad M3 Questions & Answers] GSX-R Rider:
B302 trouble

Did the Rollback to BTV-DL09C100B009.

Nothing but trouble with BTV-DL09C100B302
[Huawei Mediapad M3 Questions & Answers] crzycrkr:
Sorry, I found that info. Thanks. Didn't help me. Do you have instructions in this thread on his to perform the rollback and where to find it? I have model number btv-w09c128. Thanks for the help
[Huawei Mediapad M3 Questions & Answers] Zoidbergowitsch:
Just curious : what problems did you have?

Mine works very good with 302....
[Huawei Mediapad M3 Questions & Answers] GSX-R Rider:
It worked fine for a day or 2. After that : No Bluetooth, front camera gone and this morning boot-loop. Did nothing else to it. Maybe i'll try it again later this week. Not sure yet.

Must say i was surprised, because it worked perfect(smoother as 009)
[Huawei Mediapad M3 Questions & Answers] teruhiko666:
Have u tried the firmware (full rom not the rollback one) for BTV-W09? from http://consumer.huawei.com/it/suppor...=SupportSearch

And how was it failed to update? I once failed to install the B009 firmware, my DL09 keep on bootloop, then i try the recovery option by holding Vol down + power button and do wipe and factory reset there.

After that try to force update again with the B009 firmware then its all good again.

Sorry i dont have the exact instruction

---------- Post added at 06:22 PM ---------- Previous post was at 06:18 PM ----------

my build version now says NRD90M test-keys ,

no keyboard on startup only google voice typing,

no updater app

no huawei file explorer app

abit lag while opening settings

and also missing several other essential apps
[Huawei Mediapad M3 Questions & Answers] Zoidbergowitsch:
Interesting, None of these problems here... Only problem still present is the "phone instead of tablet" problem. (what can be partially fixed via DPI change)

You did the Update from "stock (locked BL, unrooted, NO Twrp)" B09 via B10 to B302 with the help of Firmware Finder? Cause that was my way and everything is still working pretty fine.
[Huawei Mediapad M3 Questions & Answers] burnt187:
Now I also want to try to update via the firmware finder method. Im on b09 stock with stock and locked bootloader. Strange is that firmwarefinder is not finding b10 to download. For b301 and b302 there are zip fils to download but for b10 its empty. See my screenshot