Samsung Galaxy S21 SM-G991B/DS cant unlock bootloader - Samsung Galaxy S21 Questions

Hi. I have problem with OEM unlocking. When I'm going to developer options and click on OEM unlock, button turns gray, not blue. When I enter phone to bootloader, device unlock mode didnt appear, and OEM LOCK (U1) is still active. Please, help.
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Could be your KG state ( download mode ) be in active state.

radek225 said:
Hi. I have problem with OEM unlocking. When I'm going to developer options and click on OEM unlock, button turns gray, not blue. When I enter phone to bootloader, device unlock mode didnt appear, and OEM LOCK (U1) is still active. Please, help.
View attachment 5355759
View attachment 5355763
Click to expand...
Click to collapse
Did you already found a solution? I have the same problem, same device

have the same problem

still need help

I have the same problem. Someone found a solution?

I just got this phone and the OEM unlocking toggle was completely missing.
Turning off the automatic date and time under general management, adding manually 2 weeks to the current date, reboot the phone and turning on wifi to establish an internet connection solved the issue for me. I read that also helps if the OEM unlock button is just greyed out, but I cannot confirm that.
BTW I got the clue from the official Samsung support. Since this toggle is not only used for rooting but also other functions, they should help you out if you have issues.

As you can see, the OEM switch is only after entering Download Mode, there is no option to unlock the bootloads. Changing the date doesn't help.

also have the problem. how can i proceed to get root?

Related

Faceunlock password useless!

Gsm 3d here...
I noticed that the face unlock code if light too low or can't recognize can be bypassed by simply pressing the ok button. actually unlocked with wrong password too.
Anyone else?
Could have been a recent mod I flashed.
welcome to custom roms. Until an official build is released, there will be bugs.
scariola said:
Gsm 3d here...
I noticed that the face unlock code if light too low or can't recognize can be bypassed by simply pressing the ok button. actually unlocked with wrong password too.
Anyone else?
Could have been a recent mod I flashed.
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Bat signal for fix!
Mine asks if I want a pattern or PIN code while setting up the face unlock. I chose pattern and if the phone is unable to detect my face it asks for the pattern.
Only tried this on a few sense 3.6 ROMs.
Ok, so it was a zip I flashed that caused this to malfunction.
I setup the passcode for Facelock, then when it didn't recognize me, pressed the ok, or entered passcode incorrectly and it bypassed the security I put in place.
I restored a backup and can say that it no longer accepts incorrect passcode or just clicking ok.
Welcome to the world of flashing zips blindly, lol.
I'm holding out for retina scan (had to edit that before posting, originally wrote rectal scan. Hmmm.... a new idea, maybe not).:silly:

Can't unlock, Network Lock "on" How to turn it off. Galaxy S2 I9100

Hi guys, this is my first post on the forum!
I have a Galaxy S2 I9100 that I want to unlock but it has this "Network Lock" and won't let me introduce any codes. The phone is rooted and have superuser, I gave it a try to this tutorial but didn't work...I think.(click here to go to the tutorial) Another thing is that I used an app called"Galaxy S Unlock" and went to the part of "UnlockSGS3" and made 2 process. 1.Backup efs folder
2.Sim Unlock
and then the network lock that was "on" on the personalized settings turns off.
If I check the setting with *#7464625# it shows "Network Lock OFF But still cant put the unlock code.
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mrmorales21 said:
Hi guys, this is my first post on the forum!
I have a Galaxy S2 I9100 that I want to unlock but it has this "Network Lock" and won't let me introduce any codes. The phone is rooted and have superuser, I gave it a try to this tutorial but didn't work...I think.(click here to go to the tutorial) Another thing is that I used an app called"Galaxy S Unlock" and went to the part of "UnlockSGS3" and made 2 process. 1.Backup efs folder
2.Sim Unlock
and then the network lock that was "on" on the personalized settings turns off.
If I check the setting with *#7464625# it shows "Network Lock OFF But still cant put the unlock code.
...
Click to expand...
Click to collapse
Have a look here => http://forum.xda-developers.com/showthread.php?t=1092451
An app to find the unlock code for your phone from Chainfire.
And the description for unlocking is here => http://forum.xda-developers.com/showthread.php?t=1064978
May work or may not work on your phone ...
Good luck !

Couldn't check Finde device status

Hi everyone.
1 - After my xiaomi redmi 3 Note Pro was in bootloop I flashed it with MIUI Global 8.1/ Stable 8.1.1.0
2 - At the first boot, when I had to sign in to my Mi Account, the phone started saying "Checking Find device status...", without letting me even try to sign in.
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3 - So i tried to flash the phone again but it doesn't work now: with every image version and every MiFlash version I try in MiFlash says [error:"Flash tz error"]. I've seen that this probably happens because my bootloader is still locked.
4 - So I tried to unlock it with the standard procedure with MiFlashUnlock, and after all the procedure I received the message, but when I try to unlock it says: "Couldn't verify device, current account is different from the account info on the device". So I've seen that this is because I can't login into my account in the phone (see section 2).
5 - I noticed that I'm able to access the apps and the settings of the phone even if I'm in the mi account login screen (see section 2) holding the center button and going to google now and searching for settings or app names. I tried from the settings to reset the phone but it doesn't allow me since I'm not logged, I also tried to update the phone with the update app, but it doesn't let me.
Pls help
i got the same problem, anyone can help to solve this?

Question (solved) Cannot install a custom ROM

Hello everyone, a week ago I received my Mi 11 Lite 5G and the first thing I did was unlock the bootloader. Today I managed to unlock it and tried to install a custom ROM (xiaomi.eu). However, I had a problem that made the operation impossible. I forgot to activate the option "install via USB" thinking that this one was not important, obviously I underestimated it. My question is: do you have any solution to reinstall the basic ROM (there isn't system currently), or activate this option other than in the phone (in fastboot with adb for example...), regardless of the method, I hope there is at least one.
Awaiting a positive response (I hope), greetings and I wish you all a merry Christmas.​
This option doesn't really matter, if your bootloader is unlocked (as in there is a undone lock icon every boot above the Mi logo) just go into fastboot by shutting the phone off forcefully, then holding down Power + Volume Down until you see the Fastboot Screen as shown below
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Then after that, check device manager in Windows to see if your device is being seen as "Android Bootloader Interface", if it is. Then you're good to go! Download the latest Xiaomi.eu ROM for Renoir then unzip it, then run the batch script for your case. You will lose all of the data on your phone's internal storage when installing though. So beware and be sure to make backups!

Question Just got a Pixel 6 today - cant bootloader unlock

Hello. Ive been around awhile, not new account but coudlnt get my login info right. Sorry about that. Soooooo... I purchased a Pixel 6 via Amazon listed as unlocked / renewed. I fully charged it and booted it up. Its running Android 12 currently (not 13), and its model is: GB7N6 .
After enabling developer mode, OEM Unlock is indeed greyed out and unchangeable. Isnt model GB7N6, running Android 12, specifically compatible for bootloacker unlock?
Does it say anything underneath the toggle? On my 6A it shows as "carrier locked" and wion't let me turn it on.
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Underneath, it says "Connect to the internet or contact your carrier". Currently on wifi. Have not switched yet from my iphone to this one (was hoping to have it flashed with a custom rom etc beforehand)
@bleedingoutward Can you put the imei into an IMEI lookup? It might be an unlocked Verizon phone (which cannot be bootloader unlocked)?
That message will show sometimes with Verizon Pixels
Its not Verizon. Model in settings is GB7N6.
@bleedingoutward
Ok, so it's T-Mobile (which will unlock). Can you try flashing 13 with Google's online flash tool and seeing if it unlocks from there?
From my understanding, wont that make it permamantly unable to be unlocked? I thought i read that about 13
No, 13 will not do that. 13 supports unlocking on Pixels (I'm sure about it).
Still no luck
Take a screenshot of about phone and dev options please?
And can you try putting a sim in it?

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