yashsingh1/xdaforums huggingface dataset:
[Huawei Mediapad M3 Questions & Answers] tek3195:
I just looked at attached image. When that happened to me I started fresh from a new folder. I believe I deleted all of the old appdata. Then when opening IDT navigate to the usb_upgrade folder and select <your-firmware_Download.xml> file to setup IDT. I couldn't figure out how to change it if wrong file selected.
[Huawei Mediapad M3 Questions & Answers] buibang1:
My english is not good, I am using google translate, there will be errors, please sympathize with me, thank you very much
[Huawei Mediapad M3 Questions & Answers] tek3195:
yeah you got it. now it's just a matter of setting up IDT and it took me a few tries. but it will work.
[Huawei Mediapad M3 Questions & Answers] buibang1:
I have redo the steps from scratch, but still get the error like this https://ibb.co/fSP8GKg
[Huawei Mediapad M3 Questions & Answers] tek3195:
When you get the first COM port to show up click done. It should only show one. I edited usb map to only have one window I think
[Huawei Mediapad M3 Questions & Answers] buibang1:
I can't do this step: ((

https://ibb.co/LrcPmMB >> https://ibb.co/m4t7yk5

can you see and help me please
[Huawei Mediapad M3 Questions & Answers] orangpelupa:
Do you have BTV-L0J dload firmware for Android 7?
[Huawei Mediapad M3 Questions & Answers] tek3195:
Just put video in that folder, download and watch. It's not edited, easy to follow normal speed and is only about 2 1/2 minutes long. It should show you what you need.
[Huawei Mediapad M3 Questions & Answers] buibang1:
thank you, i will watch now

I made it like this but lost COM 1

---------- Post added at 07:17 AM ---------- Previous post was at 07:16 AM ----------

<a href="https://ibb.co/TPgWJDq"><img src="https://i.ibb.co/XFCY6fk/Ch-th-ch-2020-08-23-150848.jpg" alt="Ch-th-ch-2020-08-23-150848" border="0"></a><br /><a target='_blank' href='https://imgbb.com/'>utl logo</a><br />

[IMG="a"]https://ibb.co/TPgWJDq[/IMG]
[Huawei Mediapad M3 Questions & Answers] tek3195:
couldn't see image but in videoyou can hear disconnect and it loses COM port. It uses that com port to initiate force download but will continue the process without it. I am not sure what interface or driver it uses to complete process. maybe reload image so I can see.

---------- Post added at 12:40 AM ---------- Previous post was at 12:33 AM ----------

6.0 is only ones available that I can find. I am uploading one now that is larger than the others for L0j, it's 2.49 GB vs 1.79 GB(roughly) of the others. No idea what extras it has.
[Huawei Mediapad M3 Questions & Answers] buibang1:
:victory::victory::victory::victory: I followed your video, finally succeeded. failed the first time so the 2nd time i stole the connection with the battery, it was done. Thank you very much :highfive::highfive:

Both happy and sad, the screen took a hit while I tried to separate it. but feeling still works normally.

one more time thank you very much. Do you have personal information?

https://ibb.co/c3x7j5G
[Huawei Mediapad M3 Questions & Answers] orangpelupa:
L0J doesnt have 7 to 6 downgrader. What happen if you downgrade from 7 to 6 without using downgrader?
[Huawei Mediapad M3 Questions & Answers] tek3195:
Pure speculation, but I would think if using in-built tablet utilities for sd_upgrade, either thru project menu or three buttons it should be ok.I say that because it checks and should not install if it would be a problem. On a past Huawei/MTK I had to use three buttons to force as it would not downgrade thru project menu. But don't know for sure, try it and let us know. If goes bad there is board software.

You can always flash board software and there is a 7.0 in that folder link.
[Huawei Mediapad M3 Questions & Answers] 0m M0m0d:
sorry for the very late response from me.

These past few days I've been really busy in real life.

Yupz ... thanks to [MENTION=8491352]tek3195[/MENTION]'s board software, I fixed it perfectly.

glad to hear you've made it.

did you flash all part of the boards software ???

if so, check your imei, sn, and network status.

---------- Post added at 03:12 PM ---------- Previous post was at 03:02 PM ----------

You are wrong, it has a downgrader from 7 to 6.

There is a way to downgrade d0j from 7 to 6 via downgrader.

but it must be the right way.

The tutorial is too long, I've made a tutorial on YouTube, and I'll publish it soon!
[Huawei Mediapad M3 Questions & Answers] orangpelupa:
Looking forward to your YouTube video. Currently I'm on lineageos with baseband unknown. I'm hoping to go back to stock to fix the baseband.
[Huawei Mediapad M3 Questions & Answers] buibang1:
sorry for the very late response from me.

everything is very good, but now i am using M3 7.0 the rotation sensor is not working. Which version are you using? can you share me with no
[Huawei Mediapad M3 Questions & Answers] orangpelupa:
Rotation sensknr can be fixed by y restoring original CUST
[Huawei Mediapad M3 Questions & Answers] buibang1:
Can you give specific instructions? Can you share files?
[Huawei Mediapad M3 Questions & Answers] tek3195:
who is [MENTION=4504185]tek1[/MENTION]93 ??????????????????

"Yupz ... thanks to @tek193's board software, I fixed it perfectly."
[Huawei Mediapad M3 Questions & Answers] 0m M0m0d:
cek this out...jangan sampe lupa...walau nicknya "pelupa"... :o:o:o

https://www.youtube.com/channel/UCOo_46UTFatWczrKNafrDTA

and also for u...cek this out

https://www.youtube.com/channel/UCOo_46UTFatWczrKNafrDTA

Edited....;););)
[Huawei Mediapad M3 Questions & Answers] orangpelupa:
Whats your model?
[Huawei Mediapad M3 Questions & Answers] buibang1:
I am using model BTV-L0J, lineageOS version 15.1.0-btv

---------- Post added at 09:45 AM ---------- Previous post was at 09:35 AM ----------

I will follow you, thank you for your sharing
[Huawei Mediapad M3 Questions & Answers] tek3195:
Added BTV-W09 official rollback package to mediafire link http://www.mediafire.com/folder/43cwcl8hih2u2

Has instruction .pdf in english packaged with it.

Don't know if useful for other models or not. It contains the following:

tek3195:~/Desktop/splituapp-master/output$ ./splituapp -f UPDATE.APP Extracting sha256rsa.img ... Extracting crc.img ... Extracting curver.img ... Extracting verlist.img ... Extracting package_type.img ... Extracting efi.img ... Extracting recovery.img ... Extracting recovery2.img ... Extracting version.img ... Extraction complete
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
Wow, many thanks tek3195 for saving my M3 with all this.

I was in the unlocked bootloader loop state, no recovery or fastboot.

In case any other newbies are reading, I had issues first with needing to find and install the "HUAWEI USB COM 1.0 driver", but google found this driver quite easily. However, I had to try 4 different computers before I got this unsigned driver working on Windows 10 properly (my work computers seem to have a lot of USB/Serial device drivers that conflict). Then when running IDT, I kept hearing a disconnect sound and the update would stop. I found I needed to load Hisuite to get the Huawei ADB driver installed, the stock google ABD driver doesn't work. IDT was stopping as it tried to switch from COM 1.0 mode to ADB mode for installing stuff.

Really easy except these small issues.

I seem to be missing my keyboard input now, only google speech appear when I should be entering anything. Hard to do WIFI passwords this way! I will try a bluetooth keyboard to improve this issue until I can get Lineage installed and then check for any other issues.

I upgraded from the strange Chinese version installed from the BTV-W09C500B303_Download.xml using the DLOAD folder on a uSD card with the volume up+down and power button at boot, updating with a BTV-W09C128B353 update. Maybe if I did an intermediate update, or found a full image instead of an update the keyboard would be working? Now that I know I can recover from "bricked" I am not scared to try many different things!

I am not sure if I need to be using C128 files since this is a North American model, but this recovery method I think make the device generic?
[Huawei Mediapad M3 Questions & Answers] tek3195:
If you used the 'strange' chinese version that is the board software package and it only comes in chinese. If you want keyboard to work you have to roll back to android 6 as all of the nougat updates I've been able to get are same with no keyboard. Even taking it back to marshmallow and letting it update via OTA the ota has no keyboard and missing file manager and other apps. I keep some apk's on pc and install hackers keyboard with adb or if you put apk on sdcard you can get to it by going to downloads and then changing directory once in downloads. Oh yeah, forgot, you have to change homescreen layout in settings to get downloads icon and a few others to show up. Then you can install a keyboard and file manager from sdcard if prepaired for it. The nougat updates are about useless really, best suited for prepping for LOS by @surdu_petru which is working pretty well I believe. I haven't picked up my btv-w09 in a month or more so don't even remember what I have installed currently.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
Yes, I was hoping to get most things working then move to LOS. That's how I got into this mess, I was almost there but I left my uSD card with android 6 under dload from a downgrade and had moved to android 7, and ended up pushing too many buttons to get to recovery and instead it bricked doing the 7 to 6 downgrade from that file without the intermediate step.
[Huawei Mediapad M3 Questions & Answers] tek3195:
I believe there is a rollback file at link I posted in this thread if needed in the future. In fact I think all files needed to rescue any BTV are there. If you make that mistake again you can snatch sdcard and stop it if you act quick, it doesn't start writing till somewhere around 10% progress. Or you can hold power button down and ignore crash warning. It will power off and you have to remove sdcard before powering on as it will go back to forced update as soon as you power it on. If you power it on without sdcard it will hang at 5% for a while then fail allowing you to break update cycle or you can crash it again with power and vol- for fastboot then reboot from there. As I write this I realize I've done this a lot, too much actually.

http://www.mediafire.com/folder/43cwcl8hih2u2/BTV-DL09
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
I found a Dload Update.app with a file size of 3.4GB from a download called "HUAWEI MediaPad M3 8 Firmware (BTV-W09 ,C100B006, EMUI4.1+Android 6.0)" I had downloaded from somewhere back in 2017. I was hoping with the large file size it may have my missing stuff in it.

I used the volume up/down+power to get this update installed, and it restore my Bluetooth and keyboard and all apps. I think this file must be like a full ROM image. The Mediapad seems to be totally fully functioning, ready to try to get to LOS. I haven't found if the bootloader remained unlocked yet, or if my old unlock code is still valid, but if not I guess I will pay money again to dc-unlocker.

The first time I tried to install it didn't let me, some error about not a correct update, I don't know if the file copied wrongly to the uSD card, or if going into recovery and wiping cache and data was the trick to let it install. Now I no longer have a strange test model version, it says my tablet is model BTV with firmware BTV-W09C100B006.

I am not sure if this file would be useful to anyone else coming out of using the IDT tool or how to make it available. Definitely much easier than trying to piece and patch my Mediapad to what I think is stock from various other means.
[Huawei Mediapad M3 Questions & Answers] tek3195:
Yeah, that was a full ota for marshmallow. All of them that I've run across have restored everything except 5GHz wifi in US models. If you look at Team MT online database you will see the different ota's. The full ones are 2~3 GB compressed, the UPDATE.APP in them is usually 3~4 GB. Once you you try to update to nougat it all goes to shyt for every update I have tried. Even the one that Huawei sends via HWOUC now is missing components and I am not sure what happens if you try to use HiSuite, I know it used to offer two versions and did not last time I tried it. The update.app doesn't change your bootloader code(may relock) but IDT with board software can, depoends on what and how it was flashed.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
Well, the saga continues. I started on the path to LOS, manged to unlock the bootloader, the old key was still valid. Loading of TWRP went fine. This time I decided to be smarter and do a backup in TWRP before I went any further, however, if I selected 3rdmodem or data then backup would fail. So I backed up everything else.

Lots of other things in TWRP show "failed to mount '/3rdmodem' (invalid argument)". I have checked and there is a folder with this name, but it seems empty in TWRP file manager.

Next was load Magicdisk.zip. However, after the reboot for this, now I am stuck where at boot it asks me to type a password to decrypt storage (this also happened in my first try before I bricked). So I gave it what used to be my unlock pattern converted to number positions on a numberpad and it returns with "The password you entered is correct, but unfortunately your data is corrupt". Now I am trying to format and switch file systems for my data folder, but this isn't fixing things. I have also tried wiping Dalvik and cache.

Not sure where to go next, maybe if I end up back at IDT restoring I will encrypt my device and then decrypt it and get rid of any lockscreen info I can.

The /3rdmodem issue seems a bit more troubling.
[Huawei Mediapad M3 Questions & Answers] tek3195:
Wrong TWRP installed. You have to install the one from @surdu_petru if you use greatlsons you get errors as one tries to handle decryption and renames /data to /dev/block/dm-0 or something along those lines. There are also others that I think caused problems. Try this one:

twrp-3.3.1-0.img md5: 984779bc7af812eb1b3e67e197732dbc

OK so I picked my btv-w09 up out of the pile under the table and the battery was dead. Been down there a long time and can't remember what was installed but charging battery and it booted to erecovery. For the hell of it I ran the update.app and relocked bootloader and started over so its fresh in my memory. Use the twrp in link above. Format /data then reboot recovery. Wipe all but external sdcard then flash LOS. If on w09 don't forget to install boot.img after los.zip. I installed pico gapps just to make sure everything worked and they installed as usual for me, which is they hang for about 90 seconds after it says install complete before releasing device. Took less than a minute to boot up and all good.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
I have tried a few things to get into LOS. I can seem to always get back to firmware C100B006 which has all apps etc. (but I really have a USA C128). However, I can't get straight into LOS from this version, twrp-3.3.1-0.img doesn't seem to work with EMUI 4.1, it just won't go into recovery with this file. If I use twrp_BTV-W09_greatslon it complains the device type is wrong for installing the LOS_zip file so I can't go from marshmellow + EMUI 4.

So, if I go do a dload update into a Nougat ROM with EMUI 5, then I have issues with reports of bad /cust (and still /3rdmodem problem as well). I can load the LOS_zip file, and gapps_zip and BTV boot image, but LOS stalls out with the animation. Also when I update to Nougat the device changes from model BTV-W09C100B006 to generic_a15, and the build number becomes "NRD90M test-keys". Every time I do the update it gets to 99% and says there is an error, but the 2nd time I do the update it says success.

In Nougat however, there is no keyboard or bluetooth. I don't know why the update always kills them.

Then I tried restoring /cust from my backups done with "twrp_BTV-W09_greatslon" - which is the only TWRP that works with EMUI 4, but the backup crashes at 50% when trying to restore either with twrp-3.3.1-0.img or with "twrp_BTV-W09_5_greatslon", which are the 2 that seem to work with EMUI 5.

I may give up and just leave the device with C100B006, the time invested is getting a bit crazy for what the device is worth. But I do love a challenge so I may give it a rest for a week or so and see if I get some fresh ideas.

At least I can still get into recovery (provided I install a compatible one) and bootloader so I can keep trying things.

Should maybe I try IDT with the .xml file from the BTV-W09C500B303 image you have on Mediafire instead of the C100B006?

Thanks for your help.
[Huawei Mediapad M3 Questions & Answers] tek3195:
All the updates for nougat seem to be that way now. When I did mine yesterday I dealt with the same thing. You dont have to have a keyboard to install LOS. You do need to get to menu to enable developer options and you do that by pulling down on notification bar and hitting gear icon. Change your home page layout to card style or whatever they call it and you will then see all your missing apps except keyboard that is not needed anyway. You don't have to change home page layout either, thats just if you want to look at what is there. Set your dev op settings and grant adb permissions to set vendor keys. Don't worry about oem unlock if it's not there it will still allow unlocking. When you try to flash anything it will say not allowed if you don't unlock. Your white fastboot screen will say unlocked but it is not. You have to unlock again and go through your settings and set dev ops again then flash the twrp that I linked you to for LOS to work. I too have US C128 variant and just did this yesterday so the info I'm giving you works for sure. One thing that absolutely not work is greatlsons twrp and surdu_petru LOS. If youn want to install LOS you need to delete your copies of greatlsons and forget about them, if you continue to try mixing or going back and forth you will never succeed with LOS.

To sum it up, upgrade from 6 to 7 and don't worry about keyboard and bluetooth they will be overwritten anyway. Install correct twrp and format /data, reboot recovery and wipe system, vendor, cache, internal storage and whatever else is there except external storage. After wiping everything install los from external sdcard then install boot.img from ext_sdcard followed by pico gapps and wait for gapps to finsh even though it looks hung up. Wipe dalvik cache and reboot system and it works. If you try anything different it will not work.

If you run into /cust warnings in twrp you can ignore them or let me know and I will give you a copy that does not have /cust in it as LOS doesn't use the cust partition. I had same warnings at one time and made another twrp. You can search los thread and find reference to it between surdu_petru and myself.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
Maybe the above is worth a try. I have tried ignoring the /3rdmodem and /cust "failed to mount.... invalid argument", and tried installing Lineage 15,16,17 all with the same result that the booting hangs with the animation of the 1/2 elipse and moving circle going on and on and on.....

I am worried about the IDT files I download to recover from brick state from Mediafire (C100B006 stuff). The files erased themselves from my memory stick and main drive, as well as corrupting the .zip file they were packing in while downloading from Mediafire. The directories created on unzipping plus the original zip file were basically were wiped from being able to be used, and I even couldn't find them with an unerase utility. This has me more than a little concerned that they came with a unwanted something "extra" inside somehow. I have never seem this, so I haven't used my computer for any financial transactions until I have time to reformat and re-install Windows. I don't have the files to submit to Virustotal or similar to see what might have been included as a payload. It is the weirdest thing I have had happen.
[Huawei Mediapad M3 Questions & Answers] tek3195:
Those files in that folder came from easy-firmware and Huawei and were clean when I uploaded them and several others have used them with no problems. I've downloaded and used some of them but not all. I will check on it in a few minutes as I have a new Dell Precision 3240 Compact to be delivered Tuesday and don't want anything getting phucked up from my own files. I'll let you know what I find.
[Huawei Mediapad M3 Questions & Answers] tek3195:
@DVSGUY I downloaded that entire folder plus a few more files from Mediafire and ran clamav with 2 hits. 1 for magisk.zip and 1 for Magisk Manager .apk. You think maybe it was something else or maybe even someone that erased them and corrupted whatever was corrupted ? I really don't think it came from those files and they don't come with any "unwanted something 'extra' " that I could find.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
I am wondering if easy-firmware might have put some "self destruct" into the files to keep them from being shared? Maybe not a harmful "something else" to anything else on the computer, so it wouldn't be picked up by AV scanning. It would make some sense that easy-firmware wouldn't want their files shared.
[Huawei Mediapad M3 Questions & Answers] tek3195:
NO! There is nothing like that in those files. Those files in that folder are clean. Depending on which file there have been from 22 ~ 113 downloads from my mediafire account. Not all are from easy-firmware some are from Huawei servers and some from other places. There has been 1 person who has had this issue that I'm aware of. I have no way of knowing what you did, but have had it happen to me before. You wiped your stuff out, you screwed something up and need to start exploring the possibility of the culprit that lies within.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
Finally made some progress. I think these were the main steps to at least get me back to Android 7 and a fully functional M3, but C100 version instead of C128. Could not figure this out with C128 Roms.

I had to use the test point reset, loading BTV-W09C500B303 using IDT.

Then upgraded using DLOAD method from "HUAWEI MediaPad M3 8 Firmware (BTV-W09 ,C100B006, EMUI4.1+Android 6.0)" resulting in working C100B006 M3.

Then I had to unlock

Next, flash twrp_BTV-W09_greatslon.img to recovery

Boot recovery, and backup oeminfo

Replace oeminfo in backup with someone else's one from their C100 (oeminfo.emmc.win) found in these forums or maybe it was on 4pda-ru.

Restore this back with TWRP into OEMINFO

I think a reboot at this point

I messed around at this point, these steps probably didn't help my progress.

BTV-W09C100B303 update.zip plus BTV-W09C100B303 update_data_full_hw_eu.zip, but this didn't result in a fully functional system, and version showed up as NRD90M test-keys, but at least model was BTV-W09 instead of generic_a15 now.

Tried to go into LOS17, but hung at boot with elipse animation. At least I could still access with adb, and I could go into eRecovery.

Next was the more good progress:

I upgraded using DLOAD from eRecovery with "Huawei MediaPad M3 BTV-W09C100B308CUSTC100D001 Firmware 7.0.0 r1 EMUI5.0 05013XKP [androidhost.ru]". (This was over top of the failed LOS installation)

This got me to what is appearing to be a fully featured Android 7 with a firmware version showing up as BTV-W09C100B308. Bluetooth, keyboard, Wifi all working.

Now I have unlocked, flashed twrp-3.3.1-0.img from recovery, and will back up everything before again trying to go into LOS17 tomorrow.

At this point I am very hopeful.

I think replacing the OEMINFO was key, otherwise I was fighting loading the incorrect firmware.
[Huawei Mediapad M3 Questions & Answers] DVSGUY:
And LOS is finally working, mostly. I have a ongoing notification that my device is not play protect certified.

Time to do some reading...

Installed DeviceID app to get the key to register with Google, waited, cleared cache for play services and play store, and it all seems good now.
[Huawei Mediapad M3 Questions & Answers] tek3195:
I hope you didn't install it with greatlsons twrp. If you did you need to flash surdu_petru version before trying any backup and restore. Glad you got it going.