yashsingh1/xdaforums huggingface dataset:
[General Questions and Answers] dedq:
If you don't have EFS backup the only thing I know you can do is flashing stock ROM. That is what has been sorting it out for me. I think I've managed doing it once with ROM which was based on stock but I think that is very hard to happen in practice.
[General Questions and Answers] xXx yYy:
AFAIK on MTK devices an EFS partition / directory doesn't exist, but an NV ( NVRAM ) partition / directory.

BTW: A Stock ROM - the ROM compiled by OEM especially for each of its device models - never includes a device's IMEI. If it would be so then all phones of such a device series would have the same IMEI - which would be a complete nonsense.
[General Questions and Answers] Deleted member 7631180:
I don't think I can fix the IMEI without a baseband.
[General Questions and Answers] cmfCyangenModteam:
Try to factory reset! When i lost IMEI on ZTE blade X3 its too helpful than i reset when this situation happen. and try to lock BootLoader again. and try to back to original ROM. +Turn off cell network and eject SIM card again and Turn on cell network after than you put SIM card again

-Alex
[General Questions and Answers] Deleted member 7631180:
I've already done that, the baseband and imei always disappear, when I lock the bootloader they come back. I don't know if this has to do with "Security boot MTK" or "AVB 2.0", I rooted and installed vbmeta, still the same problem remains.
[General Questions and Answers] cmfCyangenModteam:
@MrJosh18 Its maybe SIM problem.

Or ROM problem totally. MTK processors too vurneable to any BootLoader actions. Its maybe problems of Android telephony System apps.
[General Questions and Answers] Deleted member 7631180:
well I don't know what else to do, I can root, install GSI and then I'll do a twrp port, but I really don't know how to solve these obstacles.

BTW: it's not just on my device, other people have tested it too
[General Questions and Answers] cmfCyangenModteam:
ROOT hmmmm

I think what solves for this problem are.

Maybe BootLoader break SIM totally. Wait

MTK Enginering Mode can help you solving this problem.
[General Questions and Answers] Deleted member 7631180:
Doesn't work for me, MT6762
[General Questions and Answers] cmfCyangenModteam:
Totally a SIM problems goodbye SIM.
[General Questions and Answers] SubwayChamp:
Use this CLI tool to back up (Read option) your NVRAM, NVdata and NVCFG prior to unlock it (you can back up any existent partition you want), after that you can use this tool even to unlock it and either, for sake of curiosity or for future reference, see if it produces a different result (i.e. not erasing IMEI). https://github.com/bkerler/mtkclient

Also, you're right, you need to firstly fix the baseband null issue to can fix IMEI. What Droidriven suggested was flashing your stock ROM after to unlock bootloader, a ROM from other device even if it is from a similar or from a rebranded device won't work/make the same that the firmware for your exact model, I know, probably is not available anywhere, but this is a fact.
[General Questions and Answers] cmfCyangenModteam:
@SubwayChamp Good he have problems with IMEI.
[General Questions and Answers] Deleted member 7631180:
thank you very much, i still haven't solved the problem but this tool will be very useful for me,

I will test here.
[General Questions and Answers] Deleted member 7631180:
The baseband is back, but still no IMEI
[General Questions and Answers] applesucksLmao:
use mtk droid tools to get imei back
[General Questions and Answers] :
my device is not recognized on it

I just blocked the bootloader, and the imei came back '-' This doesn't make any sense
[General Questions and Answers] Hugo_Miskine:
Maybe if not already try to install the recovery via your phone's recovery menu but maybe you will be stuck in a bootloop or whatever (For my PRA-LX1 after unlocking the bootloader android wasnt booting and I was stuck on a bootloop, even after a system recovery, so I installed Lineage os and now everything work fine,prob somes security like huawei did with most of their phone if not all
[General Questions and Answers] applesucksLmao:
yeah it does... maybe it's something the manufacturer did to prevent people from rooting it... just like what Samsung did with their flip or fold phones, after unlocking BL, camera wouldn't work anymore

also, you're Brazillian right? heh, you shouldn't buy these cheap trash, they are really unreliable phones, I would buy a lower end branded phone than a random Alcatel spin-off
[General Questions and Answers] Hugo_Miskine:
Huawei are probably the worst tbh, I own a PRA-LX1, I wanted to install another android than the spyware edition of android that huawei provide us, it was a journey, I had to dissemble it and use testpoints and potatoNV to unlock it for free and fix my battery issue(since last emui update my battery was getting sucked, but LineageOS fixed this)
[General Questions and Answers] :
Yes I am, this smartphone had a good price when I bought it, I have no regrets.
[General Questions and Answers] applesucksLmao:
lmao, "spyware edition"... Huawei phones are really good, but As It Is ChInEsE, they have the spying thing the communist party wants. It's the same problem as Xiaomi phones, did you see that Xiaomi update that forced users to use a feature that most likely spies on them? crazy...
[General Questions and Answers] Hugo_Miskine:
not really, I dont own a Xiamoi phone yet,and if I would have this kind of update, i'll prob install an os like lineage or aosp, and yes Huawei phones are in overall pretty good, only problem is emui, aint a big fan and since last update , my old phone that I use for tests stuffs was just broken by it

and they are too annoying to root or unlock bootloader these days, I mean ok it's for the safesty of lamdba user, but why disabling the website then ? like there was a popup and stuff, even a popup on the boot of the device offering an easy recovery to a "normal" state

that's the thing that piss me off about huawei
[General Questions and Answers] applesucksLmao:
nice, I am Brazillian too! Well, the thing is, Alcatel, the company that actually makes this "tectoy" junk (here some proof about what I'm saying) seems to like to do some crazy stuff with their phones like locking them... did you buy it in MercadoLivre?

hehe funny how companies really hate users rooting and extracting the true power outta their phones, or just removing the spyware and ad revenue. Also, I wonder how the "normal" state recovery works if you already flashed a different software... maybe they just keep it on an isolated space on the motherboard?

@MrJohn18 , please see this video, it may be useful
[General Questions and Answers] :
Yes, I noticed. Yeah ML, I paid around R$ 700

I'll check, I'm doing tests with the backups I made in mtkclient
[General Questions and Answers] SubwayChamp:
The idea was, firstly, without unlocking bootloader, taking a backup from the 3 partitions mentioned,

- After that, unlock bootloader using mtk client, to see if it makes a different from the method you used.

- Then check baseband and IMEI status.

- If all it's OK, then you can root using this tool too.

- If something goes wrong, restore the partitions using mtk client, this should return your IMEI and baseband.
[General Questions and Answers] :
that's exactly what i did, however only the IMEI was not restored.

There are many partitions, I do not know if any other is responsible for the IMEI.
[General Questions and Answers] applesucksLmao:
the one that is responsible for the IMEI is "NVRAM" for MediaTek based phones as far as I know
[General Questions and Answers] SubwayChamp:
Mostly are involved NVCFG and NVRAM, sometimes NVdata is also erased, just in case, it should need to be restored.

First time I saw that unlocking bootloader, it erases IMEI, can you try to not get device to try to reboot, inmediately after of unlock bootloader, I mean, when you unlock bootloader, then device reboot (or try to) in this process is when the data is wiped out, if you unlock bootloader with mtk client while in BROM mode, then as you have a custom recovery, flash it inmediately after of unlock bootloader without disconnecting device, type python mtk w recovery and drag and drop your image, and from there probably you need to flash also the vbmeta blank that's inside the mtk client-main folder, right now disconnect device, don't let it reboot to OS but ´pressing the right buttons try to boot directly to the custom recovery, if successful the wiping process won't be verified anymore.

To know which partitions are present and can be flashed, make a typo through mtk client, like; python mtk w bogo (instead of logo) drag and drop the logo image, you'll see the partitions listed there, if you can upload some screenshot.
[General Questions and Answers] :
It's complicated, it really looks like the manufacturer designed it not to be unlocked.

restoring NVCFG, NVRAM and NVdata just don't change anything. The only thing that has changed is that now I don't lose the baseband unlocking through mtkclient.

I'll port a custom recovery for it now and see what happens.
[General Questions and Answers] cmfCyangenModteam:
@MrJohn18 Its maybe SIM Problem.

BootLoader maybe Lock SIM and IMEI totally
[General Questions and Answers] dedq:
I don't know. I had it fixed numerous times on my S6.

I was always advised to flash stock ROM.
[General Questions and Answers] cmfCyangenModteam:
In my opinion OEM ROM dont have IMEI and its + because Device can set IMEI Normally.
[General Questions and Answers] cmfCyangenModteam:
+ Unlocking BootLoader erases IMEI and IMEI need to be generated again.
[General Questions and Answers] SubwayChamp:
First off, try again the steps using the CLI, typically the graphical interface backup partitions in .bin format, but most likely the original partition is in .img extension, so have to be restored in the same original extension.

And if doing this way, don't make any difference, I would try with other partitions too, that even are not related to the NVRAM, may produce the network not working or interfering in some way; misc, frp, persist, sec1 and seccfg.

As you're using the graphical interface, to unlock bootloader it runs the script (not visible for end user) to erase userdata, metadata and md_udc (if present) you should try restoring these partitions.

If nothing works then in theory, unlocking bootloader runs a script, deliberately put there by the OEM, to ruin/corrupt the access to the IMEIs
[General Questions and Answers] cmfCyangenModteam:
@SubwayChamp boot.img was Have these Lines of Confugurations? (Im using Snapdragon processors)
[General Questions and Answers] cmfCyangenModteam:
I know cache.img have IMEI data.
[General Questions and Answers] cmfCyangenModteam:
All actions on cache.img. cache.img is file than have IMEI And others Configurations about device and Device features.
[General Questions and Answers] cmfCyangenModteam:
cache.img Maybe final actions.
[General Questions and Answers] :
I did several tests, restoring partitions, installing the stock, etc... The result was sometimes that the bootloader becomes blocked and other times the IMEI remains unknown. The partitions I tried to restore are: boot_para, proinfo, nvram, recovery, recovery2, swversion, para, smart, tctpersist, expdb, vbmeta_system, vbmeta_vendor, frp,nvcfg, nvdata,md_udc, metadata, protect1, protect2, oembin, secfg, persist, sec1, efuse, md1img, scp1, scp2, spmfw, sspm_1, sspm_2, gz1, gz2, lk, lk2, boot, boot2, logo, drbo, tee1, tee2,simlock, oem, super, odm, product, system, vendor, vbmeta, cache, otp, flashinfo. I know most of them have nothing to do with the IMEI, but I wanted to test it out to see, I'm still lost on this.:(

BTW:

I tried to restore with twrp and GSI installed, but also to no avail.
[General Questions and Answers] cmfCyangenModteam:
Ehh IMEI was maybe over.
[General Questions and Answers] cmfCyangenModteam:
Wait Cell networking now working or not?
[General Questions and Answers] :
No, no network/IMEI yet
[General Questions and Answers] cmfCyangenModteam:
Okay 3G/2G for minimal working or no?
[General Questions and Answers] cmfCyangenModteam:
I can say one word your IMEI become brick totally.
[General Questions and Answers] SubwayChamp:
Are you sure you backed up and restore them in .img format not .bin?

IMEI is hard-coded/embedded in the eMMC/UFS yet can be unreachable this way, not really lost, otherwise relocking bootloader shouldn't bring it back, so...

The theory is that unlocking bootloader, this cause (deliberately) the IMEI gets corrupted, if this is right, you could have an approach identifying, as you mentioned, which partition/s being restored, make the bootloader to get relocked again.
[General Questions and Answers] :
No signal(2G/3G/4G) or IMEI, only if I lock the bootloader, it's instant
[General Questions and Answers] SubwayChamp:
Not sure what you mean.
[General Questions and Answers] cmfCyangenModteam:
I mean boot.img file on system have lines of codes of IMEI?
[General Questions and Answers] :
I only restored in .bin format, how to restore in img?

I'm almost convinced the manufacturer did this on purpose
[General Questions and Answers] cmfCyangenModteam:
uhh Welcome.
[General Questions and Answers] cmfCyangenModteam:
What i can say GSI what you installed was have problems.
[General Questions and Answers] cmfCyangenModteam:
Guys i need help my GPS chip too long on "no lock phase" and phone dont See any GPS sattelites. (not MTK)
[General Questions and Answers] cmfCyangenModteam:
If sattelite was connected on phone phone immendialy disconnect GPS sattelite.
[General Questions and Answers] SubwayChamp:
Not from what I Know, the partitions mentioned look pretty similar to those than a Huawei device, so I figure it out that the IMEI can be placed in a different OEM space than NVRAM like oembin, for example.
[General Questions and Answers] SubwayChamp:
Install an app like Signal Guru or WiFi Monitor, some that can search for GPSs.
[General Questions and Answers] SubwayChamp:
Wll, I hope that in this have the clue, when you use the graphical interface of mtk client, it directly back up the ticked partition in .bin format, so I don't use the graphical one but the CLI (command line interface), just type python mtk r nvram nvram.img, where nvram is the desired partition to be backed up, and the image will be placed in the same mtkclient directory, if you want a different directory, just create one and put the path at the end of the line followed by the partition name and extension i.e. C:\BACKUPS\nvram.img
[General Questions and Answers] :
I performed the procedure but still the IMEI was not restored, apparently the problem is not in the nvram partition or any other, I believe it is some kind of lock or "security feature"

Also, I noticed that this "white label" cell phone uses Alcatel 3L 2020 firmware, but when installing it, the "TecToy" brand information remains in the rom(bootanimation for example), I also noticed that the version number is null
[General Questions and Answers] SubwayChamp:
Did you try restoring nvram and nvcfg? I think both are related to IMEI.

Also see what happen by erasing FRP.

The device you're using is undoubtedly a rebranded from Alcatel, TCL does this for other countries too.

Probably you are referring to the boot logo/boot splash instead of bootanimation, this remains while is carrier attached.

If you can free up the network from this carrier, if they allow that, then you could make any modification, it seems a carrier restriction.
[General Questions and Answers] cmfCyangenModteam:
@SubwayChamp Really we need check cache.img file .
[General Questions and Answers] cmfCyangenModteam:
@MrJohn18 Why build number is 010null?
[General Questions and Answers] :
Yes I tried... I'm aware. Actually I'm referring to bootanimation itself(animation when turning on the cell phone).

For now I'm giving up.
[General Questions and Answers] :
I don't know, it was supposed to be 01006
[General Questions and Answers] cmfCyangenModteam:
@MrJohn18 Its maybe of ROM.

Stock ROM on your phone from Alcatel. And its maybe breaking Android.
[General Questions and Answers] cmfCyangenModteam:
Hey, NVRAM partion cleaning is useless. I see many users type After Cleaning NVRAM IMEI dissapears.
[General Questions and Answers] cmfCyangenModteam:
Wait its maybe CDMA problems??
[General Questions and Answers] :
I think my problem is not with the nvram partition or any other, the problem only appears if the bootloader unlock is done, it is evident that the manufacturer has implemented some kind of security check in the oem (https://source.android .com/security/verifiedboot)
[General Questions and Answers] SubwayChamp:
Which partitions did you restore after to unlock bootloader? And is it your baseband fine after to do that, despite the IMEI lost?
[General Questions and Answers] :
I restored them all, sometimes only the ones related to the IMEI, I did several tests restoring one by one, even so, no desired result.

IMEI only comes back if I block the bootloader again. Actually I don't need to do anything for it to come back, just lock the bootloader.
[General Questions and Answers] :
I thought it could be the commands, but even doing the unlocking with mtkclient the imei disappears. Baseband appears normally, but if I install a gsi it is type unknown.
[General Questions and Answers] SubwayChamp:
Unlocking through mtk-client would be more "traumatic" so it erases other partitions too.

I found that nvram can't be accepted to be written without firstly write back the md1img and could be involved the 2 protect files, try firstly flashing these 3 partitions, then reboot and see if it needs nvram yet (nvdata is not needed, it is recreated with the right nvram and when the md1img is restored)

A different approach would be unlocking using only the mtk-client CLI, with python mtk da seccfg unlock cause the graphical interface also erases other partitions, and flashing a custom recovery, if you have, and booting directly to it, not allowing the device to perform a factory reset by trying to boot to OS or trying to go to fastboot, if you can boot to TWRP for first time, then the unlock process "forgets" to erase data, this way, if not successfull will be proved that all the stuff it is in the bootloader partition, and not anywhere else.
[General Questions and Answers] :
I've tested all ways of unlocking, with/without graphical interface.

I will check the md1img.

I already ported twrp to it, it didn't matter if it was installed or not.

I found something that might have something to do with it,

(https://xdaforums.com/t/guide-how-t...tloader-unlock-status-for-your-phone.4135683/) partitions efuse.img, nvram.img, nvcfg.img, proinfo.img, protect1.img, protect2.img, sec1.img, seccfg.img, is related to the bootloader, I confess I had no idea about these things, mediatek devices are new to me.
[General Questions and Answers] cjay da boss:
Hey does anyone know where to find the stock rom for this phone, mines is stock in demo mode and idk how to remove it I've been searching the internet for a stock rom but no luck..alcatel 5029D tokyo pro... Can somebody help me
[General Questions and Answers] rgnr:
Could it be that mtkclient erased modem partitions on my phone so I'm unable restore IMEI?
[General Questions and Answers] xXx yYy:
Yes, it is possible that MTKClient erased the modem partitions on your phone.

There are a few things you can try to restore the IMEI.

One way is to use a tool like MTKClient to flash the modem partitions with a backup of the modem partitions. If you do not have a backup of the modem partitions, you may be able to find a backup online.

Another way to restore the IMEI is to contact your phone's manufacturer. They may be able to provide you with a new IMEI or help you restore the IMEI using their own tools.
[General Questions and Answers] CaruzoOnTop:
Has someone found out a way to unlock Tectoy On and install a GSI without losing IMEI? I dream about using a recent Android in this cellphone
[Xiaomi 11T Pro] Caliban21:
Hello Xiaomi Community,

I've been trying all day to unlock the bootloader of my 11T (not to be confused with the "Mi 11") but without success... Developer options are active, OEM and USB debugging are enabled. However, I noticed that after I connected the account and device and closed the settings, the Mi unlock device keeps resetting. That is, when I reopen the developer options, it looks like I never connected my account and device.

Is this normal or is this the fault and what can be done?

Have it with various tools (Win10: xiaomi-bootloader-tool; Mediatek-unlock-tool, XiaoMiTool V2, MiFlash Tool) and (Linux: Xiaomi ADB&Fastboot Tools, ADB&Fastboot) tried, but after rebooting the smartphones it is still locked :(

I also went through a lot of tutorials step-by-step but it doesn't want to.

Am I making a mistake or is this possibly a bug in the system or something?

P.S. processor is a rather rare MediaTek here.

Hopefully someone can help :) I am grateful for every answer..
[Xiaomi 11T Pro] sasaboor64:
You may follow my guide till bootloader unlock.. it should for all xiaomi devices:

https://xdaforums.com/t/master-guid...-flash-twrp-root-device-flash-eu-rom.4402203/
[Xiaomi 11T Pro] Caliban21:
The Waiting Time, that you describe, is the Problem. Da liegt der Hase im Pfeffer, we say in german :D

I have done the preparatory work more often then i can count... It seems like the Time is resetting itself automatically again and again :/ this sucks..

In certain parts Xiaomi is a absolutely catastrophe.. in comparison with, for example, Huawei.
[Xiaomi 11T Pro] sasaboor64:
Don't do anything for 7 days. It will reset if you plugin and try to unlock in between.
[Xiaomi 11T Pro] Caliban21:
okey i'll try it. Thank you
[Xiaomi 11T Pro] Marvin732:
Sadly Huawei has no way of unlocking bootloader, same as being banned from preinstalling google services
[Xiaomi 11T Pro] MocnePifko:
No it won't. It will show you the time left to unlock. The only thing that will reset the counter is readding the mi account in dev settings. And that's exactly what OP did trying to unlock over and over again each time it failed ignoring the 168 hours waiting time. Judging from his description.

Removing/replacing the sim card is also a bad idea during the waiting time as it is tied to your Mi account.
[Xiaomi 11T Pro] Pichulec:
You just need to add the unlock account in dev options and wait.
[Touch Diamond, MDA Compact IV Themes and Apps] Kemot320:
How about creating an app hiding touch flo and taskbaf and displaying wallpaper on whole screen? It would show everything after touch? Anyone to create sth like this?
[Touch Diamond, MDA Compact IV Themes and Apps] MisterSosa:
You mean like a screensaver sort of thing ?
[Touch Diamond, MDA Compact IV Themes and Apps] johanromijn:
What about S2U2 or Sunscape?
[Touch Diamond, MDA Compact IV Themes and Apps] Kemot320:
Yeah, sth like screensaver, but not exactly S2U2. I'd like an app which shows actual wallpaper. Maybe I shall post on background changer thread.
[LG V50 ThinQ Questions & Answers] Jonisao:
Hi guys,my v50 is in hard brick,I have the tutorials and no fix the boot,no enter in DL mode,so enter in EDL mode,I flash abl,xbl,boot,and no show menu fast boot e no show download mode ,no show in LG up,thank you guys ,help me plis!!
[Google Pixel 6 Pro] roirraW "edor" ehT:
https://www.xda-developers.com/play-stores-app-installation-progress-visible-on-home-screen/

My comment on it:

And 9to5google's article says:
[General Topics] Guan Yu:
Setting -> Developer option -> Power Monitor -> Start frame rate monitor tool -> Press the graph -> Press x -> Stop -> Start

Please Share
[General Topics] Oswald Boelcke:
@Guan Yu

Hello, just wanted to ask if you like me to move your thread to

Android General

Android root tutorials, one-click root tools, ROMs and other Android modifications can be found in this forum for devices without a dedicated device forum

xdaforums.com

Maybe it gets better attention there?

Regards

Oswald Boelcke
[General Topics] Guan Yu:
Never mind this guide is out of date as xiaomi has fixed it through patches. Now you don't need to follow this guide anymore
[Google Pixel 6 Pro] roirraW "edor" ehT:
https://www.xda-developers.com/pixel-mirroring-chromebooks/