Database Info

Root/TWRP/Flash T-Mobile S7 ( SM-G930T ) with Android 7.0

Of course S7 on Tmobile gets unlocked the day it updates to 7.0 but I want to drop a cleaner rom on it, I hate the T-Mobile/Samsung crap that just eats space and battery.
I have enabled developer mode, turned on USB Debugging and enabled the OEM Unlock.
I have tried Odin 3.12.3 and 3.10.6 ( which comes with Chain fire ).
Before and after trying a factory reset, I am completely unable to replace the recovery with TWRP or chainfire or even just drop a new rom on it. When I try to use Odin, I get an error message " Complete(Write) operation failed" or " Complete(AUTH) operation failed". I've tried running Odin as Admin, I've rebooted my computer and the phone multiple times and tried 4 different USB cables ( thick and thin ) which all pass data at a good speed.
Any thoughts? This is getting annoying.

Nomadadon said:
Of course S7 on Tmobile gets unlocked the day it updates to 7.0 but I want to drop a cleaner rom on it, I hate the T-Mobile/Samsung crap that just eats space and battery.
I have enabled developer mode, turned on USB Debugging and enabled the OEM Unlock.
I have tried Odin 3.12.3 and 3.10.6 ( which comes with Chain fire ).
Before and after trying a factory reset, I am completely unable to replace the recovery with TWRP or chainfire or even just drop a new rom on it. When I try to use Odin, I get an error message " Complete(Write) operation failed" or " Complete(AUTH) operation failed". I've tried running Odin as Admin, I've rebooted my computer and the phone multiple times and tried 4 different USB cables ( thick and thin ) which all pass data at a good speed.
Any thoughts? This is getting annoying.
Click to expand...
Click to collapse
Hi mate
yes a few..
First you are in the wrong forum check here
https://forum.xda-developers.com/tmobile-galaxy-s7
Second you can root a snapdragon S7 BUT even so your bootloader is still locked , therefore you cant flash TWRP or any custom rom....
Sorry mate

Hi, I´m not in the business of unlocking phones, just looking how to SIM unlock my personal phone. Would you please explain what does it mean the bootloader is locked? With that issue in mind, that prevents me to SIM Unlock the phone?
MAX 404 said:
Hi mate
yes a few..
First you are in the wrong forum check here
https://forum.xda-developers.com/tmobile-galaxy-s7
Second you can root a snapdragon S7 BUT even so your bootloader is still locked , therefore you cant flash TWRP or any custom rom....
Sorry mate
Click to expand...
Click to collapse

fbolzoni said:
Hi, I´m not in the business of unlocking phones, just looking how to SIM unlock my personal phone. Would you please explain what does it mean the bootloader is locked? With that issue in mind, that prevents me to SIM Unlock the phone?
Click to expand...
Click to collapse
Carrier lock is what would prevent you from using your SIM in the phone if it's not the right carrier. You'll either need to call the carrier of the phone (Verizon, AT&T etc) to unlock it or use an online unlocker like http://updato.com/unlock but I don't know how reliable these are.
Bootloader lock is what OP is experiencing, which prevents you modifying the boot image, so you can't put TWRP or custom ROM's on a bootloader that's locked.

This means that at the time there is no way to unlock bootloader and flash any custom roms, in order to unlock SIM on G9030T?
Beanvee7 said:
Carrier lock is what would prevent you from using your SIM in the phone if it's not the right carrier. You'll either need to call the carrier of the phone (Verizon, AT&T etc) to unlock it or use an online unlocker like ----- but I don't know how reliable these are.
Bootloader lock is what OP is experiencing, which prevents you modifying the boot image, so you can't put TWRP or custom ROM's on a bootloader that's locked.
Click to expand...
Click to collapse

fbolzoni said:
This means that at the time there is no way to unlock bootloader and flash any custom roms, in order to unlock SIM on G9030T?
Click to expand...
Click to collapse
Correct, at this stage there is know no way to unlock the bootloader and flash any custom roms.
You'll need to follow normal carrier unlock procedure

Question OEM Unlock missing on SM-A326U

Hi guys,
Man oh man this phone...
So basically I'm trying to unlock my bootloader without waiting the 7 days, since I simply don't trust this phone to give me the OEM Unlock option after 7 days...
Before I decided to unlock my bootloader I had been using this phone for about 2 months like normal, sure I uninstalled a ton of bloatware and system apps that I didn't need which MIGHT have been the reason it didn't show the OEM Unlock after months, but the battery life was amazing.
But recently I've been considering rooting my phone, and before I started factory resetting and trying many different things to show the OEM Unlock option, keep in mind I've bee using this phone normally for a couple months, I checked the developer options and not a surprise, OEM Unlock wasn't there.
So ever since, I've tried sooo many things to show the OEM Unlock:
( I reflashed the stock firmware with Odin in between all these methods I've tried )
Also before I list everything I've tried heres the full specs of this phone and the drivers I've installed on my Windows 10
Samsung Galaxy A32 5G (SM-A326U)
T-Mobile, MTK, Network locked, No SIM, NOT Snapdragon
Drivers I've installed on my PC: Google USB Driver, ADB Interface, Samsung Android USB Driver, MTK Driver, USBDk and a few more can't remember the names...
1. Changing date, checking for an update and changing the date back, tried restarting the phone in between, tried turning wifi on and off in between.
2. Combination firmware, got unauthorized error on the download mode screen talking about the pit file.
3. Tried running:
adb reboot bootloader
fastboot devices (It successfully recognized my phone)
fastboot oem unlock: Unknown command
Didn't even run the command...
4. Since its a MTK CPU I had hope for mtkclient https://github.com/bkerler/mtkclient
It just kept asking to connect my phone, tried connecting with recovery mode, download mode and fastboot mode, none of them were recognized
The reason I need a quick way to unlock the bootloader, is cause I will be doing stuff with this phone that might result in me having to reflash the firmware which I can't risk it relocking and have to wait 7 days each time something goes wrong.
I heard that T-Mobile phones bootloader's are impossible to unlock, someone please tell me that is not true...
So basically,
Is there any way to unlock the bootloader? If not why and if yeah, what have I been doing wrong and how?
Thanks guys

7 days what? Tmo A326U doesnt have the option to unlock the bootloader, you need to pay the people here that provide the service. They are the only ones that seemingly know how to get it unlocked, and I can vouch for it.

Seriously... So there's no way to unlock for free, or by waiting...?

Not a bootloader unlock. Its not just Tmo that are locking these down tighter.
You can unlock it for free if you can figure out whatever they do ;-)

Nah idc about a network unlock since I don't have service for this phone, I just wanna know if its possible to unlock the bootloader... I've tried everything

Who is talking about a network unlock?

TimmyP said:
Who is talking about a network unlock?
Click to expand...
Click to collapse
You said not a "bootloader unlock" so I was assuming you're talking about network unlock... Sorry, but should I just give up, there's seemingly NO WAYY to unlock the bootloader of a T-Sh*t phone.

Oh just misunderstanding my bad. I meant you cant wait for a bootloader unlock, but you can wait and maybe they would carrier unlock it later... but thats not what you want anyways.

TimmyP said:
Oh just misunderstanding my bad. I meant you cant wait for a bootloader unlock, but you can wait and maybe they would carrier unlock it later... but thats not what you want anyways.
Click to expand...
Click to collapse
That's kinda sad, I think I'm gonna just give up, but thanks for the information... Hopefully something happens in the future that allows it to be unlocked soon... Thanks man

I doubt they'll bring it back. OEM unlock that is. My phone is over 7 days old and I did the factory reset by holding the volume down and power buttons and then the volume up and power button and did the full factory reset. OEM unlock is still gone. Yes I got the developer options turned on. I rooted a couple of Nexus 6p's which of course are obsolete now since they were 3G and there is no backward capability. At least I got them used, replaced the batteries myself and can use them as WiFi phones with Talkatone through my WiFi. Read some blurbs about Kingo root working but I'd like to see that someone has pulled it off with the A32. Am under a 2 year obligation but I bought a second one to experiment on. I did that before I found out there was no OEM unlock. Well, if I break one, I'll have a backup. Except the phone is tied to the SIMM and I'd have to bring the backup in to have it reprogrammed.

TimmyP said:
Who is talking about a network unlock?
Click to expand...
Click to collapse
Any good service to network unlock SM-A236U or U1. Flashed XAA t no avail the Carrier_ID stays at DSH...

iabhua said:
Any good service to network unlock SM-A236U or U1. Flashed XAA t no avail the Carrier_ID stays at DSH...
Click to expand...
Click to collapse
I am working on unlock for it but I need root or a device on low security update. I am almost close to an solution if your device security patch is low please let me know

TimmyP said:
7 days what? Tmo A326U doesnt have the option to unlock the bootloader, you need to pay the people here that provide the service. They are the only ones that seemingly know how to get it unlocked, and I can vouch for it.
Click to expand...
Click to collapse
Do you have any device with an unlock bootloader or unlock? I am trying to get a ram dimp for days nobody have an device.

andioshelp said:
I am working on unlock for it but I need root or a device on low security update. I am almost close to an solution if your device security patch is low please let me know
Click to expand...
Click to collapse
I have two SM-A236U’s but unfortunately one has binary 6 FW and the other binary 7.

1.fuxk_ said:
Hi guys,
Man oh man this phone...
So basically I'm trying to unlock my bootloader without waiting the 7 days, since I simply don't trust this phone to give me the OEM Unlock option after 7 days...
Before I decided to unlock my bootloader I had been using this phone for about 2 months like normal, sure I uninstalled a ton of bloatware and system apps that I didn't need which MIGHT have been the reason it didn't show the OEM Unlock after months, but the battery life was amazing.
But recently I've been considering rooting my phone, and before I started factory resetting and trying many different things to show the OEM Unlock option, keep in mind I've bee using this phone normally for a couple months, I checked the developer options and not a surprise, OEM Unlock wasn't there.
So ever since, I've tried sooo many things to show the OEM Unlock:
( I reflashed the stock firmware with Odin in between all these methods I've tried )
Also before I list everything I've tried heres the full specs of this phone and the drivers I've installed on my Windows 10
Samsung Galaxy A32 5G (SM-A326U)
T-Mobile, MTK, Network locked, No SIM, NOT Snapdragon
Drivers I've installed on my PC: Google USB Driver, ADB Interface, Samsung Android USB Driver, MTK Driver, USBDk and a few more can't remember the names...
1. Changing date, checking for an update and changing the date back, tried restarting the phone in between, tried turning wifi on and off in between.
2. Combination firmware, got unauthorized error on the download mode screen talking about the pit file.
3. Tried running:
adb reboot bootloader
fastboot devices (It successfully recognized my phone)
fastboot oem unlock: Unknown command
Didn't even run the command...
4. Since its a MTK CPU I had hope for mtkclient https://github.com/bkerler/mtkclient
It just kept asking to connect my phone, tried connecting with recovery mode, download mode and fastboot mode, none of them were recognized
The reason I need a quick way to unlock the bootloader, is cause I will be doing stuff with this phone that might result in me having to reflash the firmware which I can't risk it relocking and have to wait 7 days each time something goes wrong.
I heard that T-Mobile phones bootloader's are impossible to unlock, someone please tell me that is not true...
So basically,
Is there any way to unlock the bootloader? If not why and if yeah, what have I been doing wrong and how?
Thanks guys
Click to expand...
Click to collapse
There was a similar procedure to unlock bootloader on a samsung mtk (A125U) same carrier as yours (T-Mobile TMB and the same applies to MetroPCS TMB) basicaly, you had to flash BL files from the A125W (canadian version) then unlocking bootloader using testpoint (bootrom mode) then using any paid or free app (in my case i use a paid one because i run a repair shop). even if you unlock bootloader using paid tools, it gets locked again when it turns on. (i tested it without flashing BL files)
sadly, i dont have a A326U lying arround to test said procedure.

1.fuxk_ said:
Hi guys,
Man oh man this phone...
So basically I'm trying to unlock my bootloader without waiting the 7 days, since I simply don't trust this phone to give me the OEM Unlock option after 7 days...
Before I decided to unlock my bootloader I had been using this phone for about 2 months like normal, sure I uninstalled a ton of bloatware and system apps that I didn't need which MIGHT have been the reason it didn't show the OEM Unlock after months, but the battery life was amazing.
But recently I've been considering rooting my phone, and before I started factory resetting and trying many different things to show the OEM Unlock option, keep in mind I've bee using this phone normally for a couple months, I checked the developer options and not a surprise, OEM Unlock wasn't there.
So ever since, I've tried sooo many things to show the OEM Unlock:
( I reflashed the stock firmware with Odin in between all these methods I've tried )
Also before I list everything I've tried heres the full specs of this phone and the drivers I've installed on my Windows 10
Samsung Galaxy A32 5G (SM-A326U)
T-Mobile, MTK, Network locked, No SIM, NOT Snapdragon
Drivers I've installed on my PC: Google USB Driver, ADB Interface, Samsung Android USB Driver, MTK Driver, USBDk and a few more can't remember the names...
1. Changing date, checking for an update and changing the date back, tried restarting the phone in between, tried turning wifi on and off in between.
2. Combination firmware, got unauthorized error on the download mode screen talking about the pit file.
3. Tried running:
adb reboot bootloader
fastboot devices (It successfully recognized my phone)
fastboot oem unlock: Unknown command
Didn't even run the command...
4. Since its a MTK CPU I had hope for mtkclient https://github.com/bkerler/mtkclient
It just kept asking to connect my phone, tried connecting with recovery mode, download mode and fastboot mode, none of them were recognized
The reason I need a quick way to unlock the bootloader, is cause I will be doing stuff with this phone that might result in me having to reflash the firmware which I can't risk it relocking and have to wait 7 days each time something goes wrong.
I heard that T-Mobile phones bootloader's are impossible to unlock, someone please tell me that is not true...
So basically,
Is there any way to unlock the bootloader? If not why and if yeah, what have I been doing wrong and how?
Thanks guys
Click to expand...
Click to collapse
Did you tried, instead of fastboot oem unlock, fastboot flashing unlock

DjoFight said:
Did you tried, instead of fastboot oem unlock, fastboot flashing unlock
Click to expand...
Click to collapse
In case people need the procedures for those processes, I wrote this up recently to help others do it easier than it was for me to figure out.
How to un-freeze an unresponsive Samsung Galaxy A32 5G with reboot, reset, factory reset, odin mode, download mode, android recovery mode & debug mode

Has any one made any progress regarding the missing oem unlock? I know what parameters to add to our kernel v1 to v3 during building to enable oem unlock and add access to fastbootd. Because of project treble our options have changed.
Sources:
Moving Fastboot to Userspace | Android Open Source Project
source.android.com
Locking/Unlocking the Bootloader | Android Open Source Project
source.android.com
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Locking/Unlocking the Bootloader​bookmark_border
On this page
Unlocking the bootloader
Locking the bootloader
Setting lock/unlock properties
Protecting critical sections
By default, most Android devices ship with a locked bootloader, meaning that users can't flash the bootloader or device partitions. If needed, you (and device users with Developer options enabled) can unlock the bootloader to flash new images.
Unlocking the bootloader​To unlock the bootloader and enable partitions to be reflashed, run the fastboot flashing unlock command on the device. After setting, the unlock mode persists across reboots.
Devices should deny the fastboot flashing unlock command unless the get_unlock_ability is set to 1. If set to 0, the user needs to boot to the home screen, open the Settings > System > Developer options menu and enable the OEM unlocking option (which sets the get_unlock_ability to 1). After setting, this mode persists across reboots and factory data resets.
When the fastboot flashing unlock command is sent, the device should prompt users to warn them that they might encounter problems with unofficial images. After the user acknowledges the warning, the device should perform a factory data reset to prevent unauthorized data access. The bootloader should reset the device even if it can't reformat it properly. Only after a reset can the persistent flag be set so that the device can be reflashed.
All RAM not already overwritten should be reset during the fastboot flashing unlock process. This measure prevents attacks that read leftover RAM contents from the previous boot. Similarly, unlocked devices should clear RAM at every boot (unless this creates an unacceptable delay), but should leave the region used for the kernel's ramoops.
Locking the bootloader​To lock the bootloader and reset the device, run the fastboot flashing lock command on the device. Devices intended for retail should be shipped in the locked state (with get_unlock_ability returning 0) to ensure that attackers can't compromise the device by installing a new system or boot image.
Setting lock/unlock properties​The ro.oem_unlock_supported property should be set at build time based on whether the device supports flashing unlock.
If the device supports flashing unlock, set ro.oem_unlock_supported to 1.
If the device doesn't support flashing unlock, set ro.oem_unlock_supported to 0.
If the device supports flashing unlock, then the bootloader should indicate the lock status by setting the kernel command line variable androidboot.flash.locked to 1 if locked or to 0 if unlocked. This variable must be set in bootconfig instead of in the kernel command line in Android 12.
For devices that support dm-verity, use ro.boot.verifiedbootstate to set the value of ro.boot.flash.locked to 0; this unlocks the bootloader if the verified boot state is orange.

I have the A32 5G (64Gb Int. Stg.) & it's the Tracfone Only version or SM-S326DL. After recently receiving word that Android 13 was awaiting us, I quickly allowed my device to receive this very kool OTA operating system update. I mention this, because a week earlier I received an email from my prepaid wireless provider instructing me in detail how to manually unlock my A32 5G handset. So, to be clear, Tracfone notified me in their email how to unlock my device, but whan
this happens to often, to write this off as an app-mishap xda...why?!
(pls. explain this to me, what is really going on)?

evnStevn said:
I have the A32 5G (64Gb Int. Stg.) & it's the Tracfone Only version or SM-S326DL. After recently receiving word that Android 13 was awaiting us, I quickly allowed my device to receive this very kool OTA operating system update. I mention this, because a week earlier I received an email from my prepaid wireless provider instructing me in detail how to manually unlock my A32 5G handset. So, to be clear, Tracfone notified me in their email how to unlock my device, but whan
this happens to often, to write this off as an app-mishap xda...why?!
(pls. explain this to me, what is really going on)?
Click to expand...
Click to collapse
I'm wondering too. Could you please pm me what you were trying to post?

Bootloader unlock GALAXY A13 5G

Greetings,
I'm really frustrated trying different methods online to show the hidden "OEM unlock" in developers menu, but without avail. Anyone can help to root this mobile?
VERSION:
AP: A136WVLU1AUK9
CP: A136WVLU1AUK9
CSC: A136WOYV1AUK9
MODEL: SM-A136W
Android Version: 11
Regards,

Hope this helps

droidkill3r said:
Hope this helps
Click to expand...
Click to collapse
Thank you for sharing, I’ll give it a try

To root a phone's Android unlocking its bootloader is NOT required.
You simply have to add SU binary to Android's filesystem and make this binary executable.

I want to oem unlock bootloader for trwp and roms but I can't find oem unlock in dev settings and tried the video above and a couple of other things I found

You need the Samsung flash tool and the version of android for the phone and su +twep+magisk is optional good luck
Ps. Allways back up everything!

lashark06 said:
You need the Samsung flash tool and the version of android for the phone and su +twep+magisk is optional good luck
Ps. Allways back up everything!
Click to expand...
Click to collapse
And I'm fixing the Samsung flash tool is PC only correct? My **** got stolen like a few weeks ago so I'm trying to figure out how to do this **** without a computer and it's a pain in the ass pretty much impossible.

I am having this issue and can't find a resolution for it anywhere.
Boost Galaxy a13 5g android 12:
No OEM unlock switch available...
The trick changing the date doesn't work at all...
I am not trying to flash custom ROM, just to tweak the system kernal settings.
I seen someone mentioned to root w/o the OEM unlocking switch available, all that is needed is to flash the SU binary with Odin.. I haven't tried this yet but I am almost positive Odin for windows doesn't even read the Samsung devices without the bootloader being unlocked.
Anyone care to chime in here? i'd be very appreciative!
Mainly WTF is the OEM unlock switch not available on my device. I actually have 2 of the same devices and both are without the switch.
Also would flashing SU work and do the trick?
Any other useful information you could send my way would be really helpful too.

Maybe who's find how to unlock bootloader on this device after July update?

When u chage time back to 3 years OEM Unlock is comeback

nagante0 said:
When u chage time back to 3 years OEM Unlock is comeback
Click to expand...
Click to collapse
Tell how to do this

I just got the galaxy a13 and have tried to unlock the bootloader without success. Has anyone figured this out or am I looking in the correct forum?

nagante0 said:
When u chage time back to 3 years OEM Unlock is comeback
Click to expand...
Click to collapse
Tried this multiple tines without success. Can you explain ?

hello guys. i have an mkopa samsung galaxy a13, -current binary Samsung official -KG state Active (01) -OEM lock On(L) -Eng mode Factory bin allowed (DASEUL) -Eng mode Atcmd allowed(DASEUL).............is it possible to flash its software....?????????? bootloader also locked

xXx yYy said:
To root a phone's Android unlocking its bootloader is NOT required.
You simply have to add SU binary to Android's filesystem and make this binary executable.
Click to expand...
Click to collapse
how do i achieve this

DerekLindvall said:
I am having this issue and can't find a resolution for it anywhere.
Boost Galaxy a13 5g android 12:
No OEM unlock switch available...
The trick changing the date doesn't work at all...
I am not trying to flash custom ROM, just to tweak the system kernal settings.
I seen someone mentioned to root w/o the OEM unlocking switch available, all that is needed is to flash the SU binary with Odin.. I haven't tried this yet but I am almost positive Odin for windows doesn't even read the Samsung devices without the bootloader being unlocked.
Anyone care to chime in here? i'd be very appreciative!
Mainly WTF is the OEM unlock switch not available on my device. I actually have 2 of the same devices and both are without the switch.
Also would flashing SU work and do the trick?
Any other useful information you could send my way would be really helpful Odin is sams factory setup utility
Click to expand...
Click to collapse

Odin is sam's factory utility for setup and repair. It will flash any sams device with it's OEM firmwear AFASIK

DerekLindvall said:
I am having this issue and can't find a resolution for it anywhere.
Boost Galaxy a13 5g android 12:
No OEM unlock switch available...
The trick changing the date doesn't work at all...
I am not trying to flash custom ROM, just to tweak the system kernal settings.
I seen someone mentioned to root w/o the OEM unlocking switch available, all that is needed is to flash the SU binary with Odin.. I haven't tried this yet but I am almost positive Odin for windows doesn't even read the Samsung devices without the bootloader being unlocked.
Anyone care to chime in here? i'd be very appreciative!
Mainly WTF is the OEM unlock switch not available on my device. I actually have 2 of the same devices and both are without the switch.
Also would flashing SU work and do the trick?
Any other useful information you could send my way would be really helpful too.
Click to expand...
Click to collapse
United States versions of samsung phones never have the oem unlock option. even if it is unlocked.

TheWorldYT said:
United States versions of samsung phones never have the oem unlock option. even if it is unlocked.
Click to expand...
Click to collapse
only models outside the united states have the oem unlock option.

TheWorldYT said:
only models outside the united states have the oem unlock option.
Click to expand...
Click to collapse
Is there any way to root the A136U 5g without unlocking the bootloader. I'm currently running on Android 13.. I want to delete or debloat the ATT & Samsung app installed at that takes up 8G of storage

How to get missing developer option for OEM Unlock (unlock bootloader)?

I have an old Samsung J3 Eclipse (SM-J327V) that has no OEM Unlock in Developer Options. The phone is approximately 5 years old. I would like to unlock the bootloader on it. I'v tried the suggestions listed on the forum, but they are for new phones to bypass the 7 day waiting period and enable the OEM unlock. I tried them anyway, and they don't work on my J3.
Seems to me that I read that Samsung started hiding the OEM Unlock with Android version 8.0
I was thinking of loading some old version of the official firmware that was Android 7.0 or earlier (if I can find it). Then, hopefully there would be an OEM Unlock that would enable me to unlock the boot loader. Once unlocked, I could flash back to Android 8.1 (newest version for this old device). Would that work? Can you use Odin to downgrade the version of Android?
Comments welcome from all. Thanks!

I've tried following every youtube video and posting on the internet for how to get the hidden OEM unlock back into developer options. None of them work. I swear I have done the process of date resetting dozens of times and it still doesn't work.
Can anybody help? Please! I'd really like to unlock the bootloader. Is there any other way to do this?

delete

insert your sim card. worked for me

actually you only need to set time forward a week or more

Win_7 said:
actually you only need to set time forward a week or more
Click to expand...
Click to collapse
idk. for me i had to insert my simcard

ElitePrime said:
idk. for me i had to insert my simcard
Click to expand...
Click to collapse
i think theres many ways to do it
setting time forward is the easiest

Samsung A03s roo issues

Hey I am trying to root my sm-a037w, fully updated.
I remember having OEM unlocked it using the developer option which is now gone completely.
I'm using Magisk to patch the AP file
Then use ODIN to flash it and it stops at vbmeta with a error.
I'm new to this and have googled alot but now I'm really stuck.
So it fails, corrupt phone, I reflash oem AP and it restarts.
I have adb and fastboot ready to go,
Thank you.

Johnhek said:
Hey I am trying to root my sm-a037w, fully updated.
I remember having OEM unlocked it using the developer option which is now gone completely.
Click to expand...
Click to collapse
This is your problem, right here. If you closely read the Magisk installation instructions:
Unlocking the bootloader on modern Samsung devices have some caveats. The newly introduced VaultKeeper service will make the bootloader reject any unofficial partitions in some circumstances.
Allow bootloader unlocking in Developer options → OEM unlocking
Reboot to download mode: power off your device and press the download mode key combo for your device
Long press volume up to unlock the bootloader. This will wipe your data and automatically reboot.
Go through the initial setup. Skip through all the steps since data will be wiped again in later steps. Connect the device to Internet during the setup.
Enable developer options, and confirm that the OEM unlocking option exists and is grayed out. This means the VaultKeeper service has unleashed the bootloader.
Your bootloader now accepts unofficial images in download mode
Click to expand...
Click to collapse
If you can't see OEM Unlocking in Developer Options, and you see KG STATUS: PRENORMAL on the download mode screen, Vaultkeeper is still active and will reject custom images.

V0latyle said:
This is your problem, right here. If you closely read the Magisk installation instructions:
If you can't see OEM Unlocking in Developer Options, and you see KG STATUS: PRENORMAL on the download mode screen, Vaultkeeper is still active and will reject custom images.
Click to expand...
Click to collapse
Yea I've been trying for the last 48 hours and I can't figure it out how to get it back.
I did have developer mode active and had seen and allowed oem unlocking, not sure when I disappeared, I think it was the latest update.
Don't know how to proceed.
Tried setting the date back , disabling system update and software update, still no OEM Unlocking.
I have read those instructions many times, I have no prior experience rooting or modding android :/
Should I reflash original firmware?
Where do I go from here?

Johnhek said:
Yea I've been trying for the last 48 hours and I can't figure it out how to get it back.
I did have developer mode active and had seen and allowed oem unlocking, not sure when I disappeared, I think it was the latest update.
Don't know how to proceed.
Tried setting the date back , disabling system update and software update, still no OEM Unlocking.
I have read those instructions many times, I have no prior experience rooting or modding android :/
Should I reflash original firmware?
Where do I go from here?
Click to expand...
Click to collapse
Did you ever see the OEM Unlocking toggle after you unlocked the bootloader?
I assume you -did- unlock the bootloader, correct?
OEM Unlocking does not unlock the bootloader, it simply allows you to.
Reflashing the firmware might be a good idea. Keep in mind that Samsung is notorious for trying to disallow custom binaries on newer bootloaders. This is all speculation though, I'd need to see the error you got to have a better idea what the issue is.

flashing firmware is bad idea, this won't reset vaultkeeper. check RMM/KG state from download mode screen first. btw it's called odin mode (not fastboot mode)
[GUIDE][17.06.2019] RMM/KG bypass - Root/Install TWRP on Exynos Samsung after 2018
UPDATE 17.06.2019 - NEW RMM/KG bypass patch UPDATE 23.02.2019 - Pie and more Please take some time and read carefully the whole post. I am not and i won`t be responsable for anything. Disclaimer I am not responsible for bricked devices, dead...
forum.xda-developers.com

aIecxs said:
flashing firmware is bad idea, this won't reset vaultkeeper. check RMM/KG state from download mode screen first. btw it's called odin mode (not fastboot mode)
[GUIDE][17.06.2019] RMM/KG bypass - Root/Install TWRP on Exynos Samsung after 2018
UPDATE 17.06.2019 - NEW RMM/KG bypass patch UPDATE 23.02.2019 - Pie and more Please take some time and read carefully the whole post. I am not and i won`t be responsable for anything. Disclaimer I am not responsible for bricked devices, dead...
forum.xda-developers.com
Click to expand...
Click to collapse
Knox Guard has to be disabled by connecting to the Internet and checking for updates, and you have to be on stock firmware to do it.
Flashing the OEM firmware won't hurt anything, and is the only way to unlock KG.
Vaultkeeper is disabled by flashing the multidisabler in TWRP.

V0latyle said:
Did you ever see the OEM Unlocking toggle after you unlocked the bootloader?
I assume you -did- unlock the bootloader, correct?
OEM Unlocking does not unlock the bootloader, it simply allows you to.
Reflashing the firmware might be a good idea. Keep in mind that Samsung is notorious for trying to disallow custom binaries on newer bootloaders. This is all speculation though, I'd need to see the error you got to have a better idea what the issue is.
Click to expand...
Click to collapse
Hey thank you once again for your help.
To be clear this is how I recall the events .
1. I did enable OEM unlocking in developer options.
2. I updated the phone through the user interface.
3. OEM unlocking option dissapeared entirely after updating to android 12.
4. Downloaded XAC region firmware using SamFirm
5. Copied AP to my phone storage
6. Patched AP with Magisk, then transferred patched file to my PC.
7. Flashed BL, patched AP, CP and CSC(not home) using ODIN 3.14
ODIN said AUTH fail at Vbmeta on my PC and on the phone iirc.
8.Reflashed using stock AP to make the phone usable again.
At downloader screen I never saw hold volume up to unlock bootloader, only press up to continue. (after booting holding volume up+down+power)
Are KG and Vaultkeeper the same thing?
I guess my bootloader is locked and now OEM Unlocking option is gone.
This is the phone currently on latest firmware.
ODIN MODE reads:
FRP LOCK:ON
KG STATUS: CHECKING
MTK SECURE BOOT: ENABLE (0)
sec ctrl status (1)
SECURE DOWNLOAD: ENABLE
Baseband version A037WVLS 3 BVJ1 (bootloader version 3?)
Thanks for all the info, sorry for the messy post and not including all the info required.
I will provide you with the info you request, I do not know how to verify my KG status, it reads checking in ODIN MODE.
I am also not sure of how to identify the region firmware I need, the software version in my about phone says:
SAOMC_SM-A037W_OYV_BMC_12_0004
BMC/BMC/XAC/BMC
I have downloaded both XAC and BMC, both have worked for me.

Ohhh, it's a Mediatek device
Johnhek said:
At downloader screen I never saw hold volume up to unlock bootloader, only press up to continue. (after booting holding volume up+down+power)
Click to expand...
Click to collapse
The proper way to enter device unlock mode is thus:
Unplug any USB cables, power device off completely
Connect a USB cable to your PC, don't connect it to your phone yet
Hold both Volume buttons, do not press Power, and plug in the USB cable.
The screen should turn on with 3 options: Volume Up for download mode, long press Volume Up for device unlock mode, Volume Down for restart. Release both Volume buttons, then hold Volume Up.
Device should prompt you to confirm you want to unlock. If it prompts you to confirm you want to re-lock, stop! The bootloader is already unlocked.
Johnhek said:
Are KG and Vaultkeeper the same thing?
Click to expand...
Click to collapse
More or less...Vaultkeeper is the process that determines the Knox Guard status, which in turn is what actually allows custom binaries
Johnhek said:
I guess my bootloader is locked and now OEM Unlocking option is gone.
Click to expand...
Click to collapse
We'll see...
Johnhek said:
KG STATUS: CHECKING
Click to expand...
Click to collapse
This means that KG (Knox Guard)/Vaultkeeper hasn't yet verified your device is supposed to be unlocked.
Johnhek said:
MTK SECURE BOOT: ENABLE (0)
sec ctrl status (1)
SECURE DOWNLOAD: ENABLE
Click to expand...
Click to collapse
Is there nothing on there that says OEM LOCK?
Johnhek said:
Thanks for all the info, sorry for the messy post and not including all the info required.
I will provide you with the info you request, I do not know how to verify my KG status, it reads checking in ODIN MODE.
Click to expand...
Click to collapse
That's exactly how - it tells you in download/Odin mode.
Since it says CHECKING, there are two things we need to do:
Ensure the bootloader is indeed unlocked, using the steps I gave above
Once bootloader is confirmed to be unlocked, you need to boot into Android, connect to the Internet (use a WiFi network), go into Settings > System > System update and check for software updates. This also checks Vaultkeeper/KG.
After checking for software update, enable developer options (if not already enabled) and verify OEM Unlocking is present; it should be grayed out with the message "Bootloader is already unlocked".

The proper way to enter device unlock mode is thus:
Unplug any USB cables, power device off completely
Connect a USB cable to your PC, don't connect it to your phone yet
Hold both Volume buttons, do not press Power, and plug in the USB cable.
The screen should turn on with 3 options: Volume Up for download mode, long press Volume Up for device unlock mode, Volume Down for restart. Release both Volume buttons, then hold Volume Up.
Device should prompt you to confirm you want to unlock. If it prompts you to confirm you want to re-lock, stop! The bootloader is already unlocked.
Click to expand...
Click to collapse
I just tried this and there is no mention of unlock bootloader, same as before (volume up to continue) I click to continue and it reads;
PRODUCT NAME: SM-A037W​CURRENT BINARY: SAMSUNG OFFICIAL​FRP LOCK: ON​KG STATUS: CHECKING (I never created a samsung account on this phone if that means anything)​MTK SECURE BOOT: ENABLE (0)​sec ctrl statu (1)​WARRANTY VOID: 0x0 (0x0)​RP SWREV: B3 NS3 Kb3, Kr3, Vb3, Vbs3 S3​SECURE DOWNLOAD: ENABLE​​​Maybe I have to wait 7 days as I have read somewhere before I get the OEM Unlock option back?​​Thank you for your help ​

your device is FRP locked. you have to unlock with google account first.
as you updated stock ROM and downgrade is impossible, I doubt you will ever get OEM unlocking back. updating stock ROM was bad idea.
BOUNTY; fix for persistent RMM state lock after 7 days
I've had a situation where RMM state has always been prenormal and OEM unlock been absent for months on Oreo. After updating to Pie, OEM unlock appeared immediately on first boot, but RMM state prenormal was still there and flashing twrp give me...
forum.xda-developers.com

aIecxs said:
your device is FRP locked. you have to unlock with google account first.
as you updated stock ROM and downgrade is impossible, I doubt you will ever get OEM unlocking back. updating stock ROM was bad idea.
BOUNTY; fix for persistent RMM state lock after 7 days
I've had a situation where RMM state has always been prenormal and OEM unlock been absent for months on Oreo. After updating to Pie, OEM unlock appeared immediately on first boot, but RMM state prenormal was still there and flashing twrp give me...
forum.xda-developers.com
Click to expand...
Click to collapse
I am using the device normally and bought the phone new, using the google account i created for it , so i dont understand how this is possible.

Idk maybe FRP LOCK: ON disappears once you removed all bonded samsung and google accounts (maybe not caused by Google Factory Reset Protection but Samsung Reactivation Lock)?
V0latyle said:
I assume you -did- unlock the bootloader, correct?
OEM Unlocking does not unlock the bootloader, it simply allows you to.
Click to expand...
Click to collapse
No he didn't unfortunately. For bootloader unlocking and passing vaultkeeper one have to repeat that step twice, before and after unlocking/factory reset in odin/download mode.
https://forum.xda-developers.com/t/magisk-root-for-the-galaxy-s10-series.3918699

aIecxs said:
your device is FRP locked. you have to unlock with google account first.
as you updated stock ROM and downgrade is impossible, I doubt you will ever get OEM unlocking back. updating stock ROM was bad idea.
BOUNTY; fix for persistent RMM state lock after 7 days
I've had a situation where RMM state has always been prenormal and OEM unlock been absent for months on Oreo. After updating to Pie, OEM unlock appeared immediately on first boot, but RMM state prenormal was still there and flashing twrp give me...
forum.xda-developers.com
Click to expand...
Click to collapse
Upgrading firmware shouldn't cause problems with OEM Unlocking or unlocking the bootloader. You've stated this a couple of times but have yet to provide any source for your claim.
FRP Lock is simply on because he has a Google account logged in, and has absolutely nothing to do with OEM Unlocking.
@Johnhek you have already connected your device to WiFi, yes? If not, you need to do so, then go to Settings > System > Software update to trigger a check. Once done, go back to Developer Options to see if OEM Unlocking is visible.
If the bootloader wasn't unlockable, the OEM Unlocking toggle would never be present. The toggle controls the state of sys.get_unlock_ability which tells the bootloader it can be unlocked. There are a couple of props that control whether OEM Unlocking is available, ro.oem_unlock_supported which is supposed to be baked into the ROM at build time, and ro.oem_unlock_allowed which determines whether the toggle is available.
I will admit I'm not very familiar with MediaTek Samsung devices, but I don't see why the process would be any different. Still, here is a guide on using MTKClient
Let's just see if we can get the OEM Unlocking toggle back and make KG happy.

V0latyle said:
Upgrading firmware shouldn't cause problems with OEM Unlocking or unlocking the bootloader. You've stated this a couple of times but have yet to provide any source for your claim.
Click to expand...
Click to collapse
I don't know for SM-A037W but I know about people selling their Samsung phones on Android 10 for buying same model on Android 9 for reason.
Johnhek said:
I did have developer mode active and had seen and allowed oem unlocking, not sure when it disappeared, I think it was the latest update.
Click to expand...
Click to collapse
There is no official information but there are rumors that from certain security patch Samsung removed OEM unlocking forcefully (USA/Canada devices).
It's also my experience with SM-T555 region DBT still not unlockable as of today.
I think it's common sense when it comes to rooting/unlocking that older android versions are easier to root.
V0latyle said:
FRP Lock is simply on because he has a Google account logged in, and has absolutely nothing to do with OEM Unlocking.
Click to expand...
Click to collapse
For other brands it's not possible to flash anything when FRP Lock is on. Furthermore that state means device is actually FRP locked. Didn't know about Samsung FRP LOCK ON is only information about device is ready for FRP locking, sorry about that...
nevertheless FRP lock is contradictory to OEM unlock, both together is afaik not possible (except for Xiaomi).
btw flashing stock firmware won't unlock RMM/KG prenormal
we will know more about in 7 days...

V0latyle said:
Upgrading firmware shouldn't cause problems with OEM Unlocking or unlocking the bootloader. You've stated this a couple of times but have yet to provide any source for your claim.
FRP Lock is simply on because he has a Google account logged in, and has absolutely nothing to do with OEM Unlocking.
@Johnhek you have already connected your device to WiFi, yes? If not, you need to do so, then go to Settings > System > Software update to trigger a check. Once done, go back to Developer Options to see if OEM Unlocking is visible.
If the bootloader wasn't unlockable, the OEM Unlocking toggle would never be present. The toggle controls the state of sys.get_unlock_ability which tells the bootloader it can be unlocked. There are a couple of props that control whether OEM Unlocking is available, ro.oem_unlock_supported which is supposed to be baked into the ROM at build time, and ro.oem_unlock_allowed which determines whether the toggle is available.
I will admit I'm not very familiar with MediaTek Samsung devices, but I don't see why the process would be any different. Still, here is a guide on using MTKClient
Let's just see if we can get the OEM Unlocking toggle back and make KG happy.
Click to expand...
Click to collapse
@V0latyle hey I have tried those suggestions still no luck. Thank you and happy holidays, I will try waiting 7 days ND let everyone know
aIecxs said:
I don't know for SM-A037W but I know about people selling their Samsung phones on Android 10 for buying same model on Android 9 for reason.
There is no official information but there are rumors that from certain security patch Samsung removed OEM unlocking forcefully (USA/Canada devices).
It's also my experience with SM-T555 region DBT still not unlockable as of today.
I think it's common sense when it comes to rooting/unlocking that older android versions are easier to root.
For other brands it's not possible to flash anything when FRP Lock is on. Furthermore that state means device is actually FRP locked. Didn't know about Samsung FRP LOCK ON is only information about device is ready for FRP locking, sorry about that...
nevertheless FRP lock is contradictory to OEM unlock, both together is afaik not possible (except for Xiaomi).
btw flashing stock firmware won't unlock RMM/KG prenormal
we will know more about in 7 days...
Click to expand...
Click to collapse
@Alecxs Yea I probably should have left it android 11.

V0latyle said:
I will admit I'm not very familiar with MediaTek Samsung devices, but I don't see why the process would be any different. Still, here is a guide on using MTKClient
Let's just see if we can get the OEM Unlocking toggle back and make KG happy
Click to expand...
Click to collapse
I will read the link tonight , much appreciated

Johnhek said:
@V0latyle hey I have tried those suggestions still no luck. Thank you and happy holidays, I will try waiting 7 days ND let everyone know
Click to expand...
Click to collapse
You can also try disconnecting from the Internet (take out your SIM as well) and set the date back by at least a week. Or you can set it forward.
Johnhek said:
@Alecxs Yea I probably should have left it android 11.
Click to expand...
Click to collapse
It shouldn't matter, honestly, although I generally prefer to do one thing at a time - unlock the bootloader, THEN update.
I have a feeling that the MediaTek aspect of things may be the issue here, although I have no way of knowing.
Johnhek said:
I will read the link tonight , much appreciated
Click to expand...
Click to collapse
Hopefully it will be of some help to you. It's not beginner friendly - you have to install Python and compile it, but if you can get MTKclient working, you can see if it's what you need.

V0latyle said:
I have a feeling that the MediaTek aspect of things may be the issue here, although I have no way of knowing.
Hopefully it will be of some help to you. It's not beginner friendly - you have to install Python and compile it, but if you can get MTKclient working, you can see if it's what you need.
Click to expand...
Click to collapse
Reading it now, I think I can handle it, the instructions seem clear.
As for the date trick.
I tried it while connected to wifi, I dont even have a sim card in this phone lol.
Tried setting to last month, havent tried forward in time though, will try disconnected as well.
The mediatek thing seems promising, I think the sec ctrl status (1) in the download screen is MTK related...
I will let you know.

I have read in one of the linked threads that SIM card plays a role here. I recommend to enable mobile data for 7 days, although there is less hope.
from what I have learned from elliwigy one can't cheat samsung bootloader not even with mtkclient. there is however paid service for devices with DID token on download screen (afaik Qualcomm only). but try mtkclient first it's a good exercise and maybe you're lucky and it works.

aIecxs said:
I have read in one of the linked threads that SIM card plays a role here. I recommend to enable mobile data for 7 days, although there is less hope.
from what I have learned from elliwigy one can't cheat samsung bootloader not even with mtkclient. there is however paid service for devices with DID token on download screen (afaik Qualcomm only). but try mtkclient first it's a good exercise and maybe you're lucky and it works.
Click to expand...
Click to collapse
I tried mtkcient but I kept getting unauthorized handshake when trying to connect phone :/
Followed instructions as per link but I encounter one error in the process:
Get latest UsbDk 64-Bit​
Install normal MTK Serial Port driver (or use default Windows COM Port one, make sure no exclamation is seen)
Get usbdk installer (.msi) from here and install it
Test on device connect using "UsbDkController -n" if you see a device with 0x0E8D 0x0003
Works fine under Windows 10 and 11
I'm on windows 11 and when I put the command "UsbDkController -n" in terminal it doesn't recognize it.
I installed the usbdk drivers from git hub, a .msi fil, from the guide.
Another problem is I don't know how to set windows default COM Port one.