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How To Guide The Quest for a Bootloader Unlock (partial guide, T-Mobile variant, may work for MetroPCS/Metro variant)

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elliwigy

elliwigy

Forum Moderator / Recognized Dev / Dev Relations
Staff member
XDA App Taskforce
Mar 16, 2011
13,398
9,846
Phoenix
www.sampwnd.com
Samsung Galaxy Tab S7 / S7 Plus
Samsung Galaxy S21 Ultra
jilebi said:
Please see the first post in this thread on how to get the unlock.bin from Oneplus for Tmobile version. It has detailed steps. Basically, you have to get a code from your OEM unlocked phone, submit a form on Oneplus website, and then wait 7 days for them to send unlock code to you. However, keep in mind, you cannot do so until you unbrick your phone with the MSMDownload tool.
Click to expand...
Click to collapse
That is not what I was asking lol.. I was seeing if anyone is aware of any threads or discussion on how they generate the unlock bins i.e. research to see if it is possible to generate the tokens on our own vs. going through Oneplus.
 
E

edale1

Senior Member
Sep 5, 2016
91
51
elliwigy said:
That is not what I was asking lol.. I was seeing if anyone is aware of any threads or discussion on how they generate the unlock bins i.e. research to see if it is possible to generate the tokens on our own vs. going through Oneplus.
Click to expand...
Click to collapse
That.... Would be very difficult, as it likely relies on encryption keys only known by OnePlus, and requires a unique BIN for each device.

That said, I'm not sure if anyone's created unlock bin generators for any other devices, so can't say for sure (I'm inclined to think 'no', but haven't actually checked).
 
elliwigy

elliwigy

Forum Moderator / Recognized Dev / Dev Relations
Staff member
XDA App Taskforce
Mar 16, 2011
13,398
9,846
Phoenix
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Samsung Galaxy Tab S7 / S7 Plus
Samsung Galaxy S21 Ultra
edale1 said:
That.... Would be very difficult, as it likely relies on encryption keys only known by OnePlus, and requires a unique BIN for each device.

That said, I'm not sure if anyone's created unlock bin generators for any other devices, so can't say for sure (I'm inclined to think 'no', but haven't actually checked).
Click to expand...
Click to collapse
thats still not what I asked lol.. obviously it might be hard and who knows how its done hence why i was asking if theres any discusdipns going on about it.. not if there are any unlock bin generators svailable, if there was I wouldnt be asking about discussions lol..

and depends on what you mean really but I offer "bl unlock tokens" for samsung models which is in the form of steady.bin flashed via odin that allows bootloader to be unlocked on devices not otherwise able to be unlocked, they are device specific as well so similar does exist for other devices. Either way, i restored my n200 and applied for the unlock token so i guess now i wait a week or whatever to hopefully get it
 
J

jilebi

Senior Member
Dec 22, 2011
97
23
elliwigy said:
and depends on what you mean really but I offer "bl unlock tokens" for samsung models which is in the form of steady.bin flashed via odin that allows bootloader to be unlocked on devices not otherwise able to be unlocked, they are device specific
Click to expand...
Click to collapse
For which samsung models are these "bl unlock tokens" available?
 
elliwigy

elliwigy

Forum Moderator / Recognized Dev / Dev Relations
Staff member
XDA App Taskforce
Mar 16, 2011
13,398
9,846
Phoenix
www.sampwnd.com
Samsung Galaxy Tab S7 / S7 Plus
Samsung Galaxy S21 Ultra
jilebi said:
For which samsung models are these "bl unlock tokens" available?
Click to expand...
Click to collapse
s9 s9+ n9 s10 s10+ n10 s20 s20+ s20u n20 s21 some flip/fold models some A models Tab s7 Tab s7+ etc.. essentially most devices released in 2019 to current on certain OneUI versions
 
mr_reaper

mr_reaper

Senior Member
Sep 2, 2016
254
23
New Orleans
OnePlus Nord N200 5G
got my unlock bin, tried to flash wont let me flash

Sending 'cust_unlock' (0 KB) OKAY [ 0.016s]
Writing 'cust_unlock' FAILED (remote: 'Flashing is not allowed in Lock State')
fastboot: error: Command failed

cause of sim locked?
 
E

edale1

Senior Member
Sep 5, 2016
91
51
mr_reaper said:
got my unlock bin, tried to flash wont let me flash

Sending 'cust_unlock' (0 KB) OKAY [ 0.016s]
Writing 'cust_unlock' FAILED (remote: 'Flashing is not allowed in Lock State')
fastboot: error: Command failed

cause of sim locked?
Click to expand...
Click to collapse
Is 'Enable OEM Unlock' enabled in the phone's developer options?

And is this the command you tried to unlock with:
fastboot flash cust-unlock unlock_code.bin
 
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    edale1
    OK, this process has been hell, but I'm gonna try and consolidate everything I've worked out so far in one place. This all applies only to the T-Mobile variant (ie. it comes preloaded with all the T-Mobile bloatware) of the N200 on the T-Mobile network; and a Windows PC, where a PC is used (though I imagine the Mac/Linux commands are quite similar). This is more to gather the info in one place than to provide step-by-step instructions.

    SIM/NETWORK UNLOCK

    Before you can unlock the bootloader, the N200 needs to be SIM unlocked. The option to Enable OEM Unlock won't even show up in the developers options until then. A temporary SIM unlock won't work, it needs to be a permanent SIM unlock.

    If your N200 is the T-Mobile variant, you can get it SIM unlocked free here (be sure to read the first post thoroughly to be sure you qualify):

    [T-Mobile USA] Free SIM Unlocking Service - [OnePlus/Samsung/Google/LG/Moto]

    Hello XDA, I am back at it again with the...
    forum.xda-developers.com forum.xda-developers.com
    @mobbdeep had my SIM unlocked within 24 hours of sending him the required info.
    You MUST have an active T-Mobile network (not Sprint or Metro) SIM card in the N200 for at least 3 full days before sending your SIM Unlock request in.

    ---
    *edit-
    An alternate is to use this debloat script:

    Found a chink in the armor... Just enabled OEM unlocking after 11 update...

    I haven't got a lot of time to get this out...
    forum.xda-developers.com forum.xda-developers.com
    Which should unlock the OEM Unlock option in the developer options.
    This should work with non-T-Mobile variants of the N200 as well.
    Thanks to @PopCaps1996 for pointing this option out.
    ---
    *edit2-
    Thanks to user @DeadDjembe we now know the specific command from the debloat script which enables OEM Unlocking.
    Code: 
    adb shell pm uninstall --user 0 com.qualcomm.qti.uim
    Running this ADB command on a stock T-Mobile variant N200 should enable the greyed-out Allow OEM Unlock option in the developers settings, without needing to run the full debloat script.
    ---

    Once your N200 is SIM Unlocked, the Enable OEM Unlock option will show up in the developers options.

    USB DRIVERS

    You may need to use the Google USB Driver from Android Studio to allow your PC to recognize your phone when it's in fastboot mode.

    Download Android Studio and SDK tools | Android Developers

    <!-- hide description -->
    developer.android.com developer.android.com
    Android Studio won't install the USB Drivers by default, you'll need to install them through the SDK Manager (Android Studio -> Projects -> More Actions -> SDK Manager -> SDK Tools -> Google USB Driver checkbox -> Apply)
    You'll need to manually install the drivers through the device manager while the phone is in fastboot mode and connected to the PC (right-click -> Update Drivers -> Browse Computer -> Let Me Pick -> Have Disk).
    The drivers should be located at:
    C:\Users\[username]\AppData\Local\Android\Sdk\extras\google\usb_driver\android_winusb.inf
    You'll want the 'Android Bootloader Interface' driver.

    UNLOCK CODE/TOKEN

    Once you can access your phone in fastboot mode, you can try:
    'fastboot oem unlock'
    But, you'll just get a message asking for an unlock token. Doesn't hurt to try, just in case, though.

    What you need to do now, is type:
    'fastboot oem get_unlock_code'
    This will display both the phone's serial number, plus a 64 digit unlock code. (you might not be able to select the code to copy it, but a ctrl-a / ctrl-c should work, then just paste it in notepad)

    Now, on your phone (still in fastboot mode) hit up/down on the volume buttons, until you see "Show Barcode", then tap the power button to select it.
    This will bring up a barcode, as well as listing you devices IMEI number. (there are other ways to get the IMEI, but this is quick, and you're already right there)
    Copy the IMEI down.

    Now go to:
    https://www.oneplus.com/unlock_token
    You'll need to create an account.

    In that form, you'll need to select the phone's model, and then enter the serial number, 64 digit unlock code (no spaces), the IMEI, and your email, as well as checking a box that you acknowledge that you void the warranty by bootloader unlocking the phone.

    If all goes well, It should take about a week from submission for them to send you the unlock token.

    ------

    I've just sent in my info an hour or two ago, and am now waiting for my unlock token.
    I'll update this with what you need to do with the token once I've gotten mine and figure it out myself, lol.

    ------

    Exactly 7 days (nearly to the minute) after sending the request in, I received the unlock code. So here's the update:

    APPLYING THE UNLOCK CODE

    You can use this URL to check the status of your Unlock Coed request:

    unlock token - OnePlus (United States)

    www.oneplus.com www.oneplus.com

    Once your Status is listed as "Finished", there will be a download button at the lower right corner.

    Download the "unlock_code.bin" file to your PC.

    Place 'unlock_code.bin' in:
    C:\Users\[user name]\AppData\Local\Android\Sdk\platform-tools\
    Or where ever you have your fastboot.exe file.
    If you don't know where it is, the command:
    Code: 
    fastboot --version
    will give your it's location.

    Now in command line, navigate to the folder "fastboot.exe" and "unlock_code.bin" are located in. Get your phone connected via USB, and in fastboot mode, and use the following command:
    Code: 
    fastboot flash cust-unlock unlock_code.bin
    (Thanks to @lentm for posting this command)
    After checking the output, to be sure it worked, use this command:
    Code: 
    fastboot oem unlock
    Follow the on-screen instructions on your phone to finish the bootloader unlock.
    View
    2
    PopCaps1996
    PopCaps1996
    you do NOT need to carrier unlocked for bootloader unlock use this...... debloat script oneplus through ADB an once finished OEM UNLOCK will be ungrayed. then you can request a unlock token from oneplus then wait 7 days then flash an unlock bootloader.
    im still carrier locked
    View
    2
    E
    edale1
    This thread has the MSMDownload Tools for the T-Mobile variant N200, as well as instructions as to its use:

    [OPN2005G] [OOS TMO DE18CB] Unbrick tool to restore your device to OxygenOS

    Disclaimer: I hope you don't break your phone...
    forum.xda-developers.com forum.xda-developers.com
    View
    2
    J
    jilebi
    elliwigy said:
    I got a tmb n200 but unfortunately within 5min seemed to have bricked it already lmao.. didnt even put a sim in it yet haha.. i basically connected to wifi then selected dsu loader and it loaded but when i reset device it says it is corrupt and will not start lolol
    Click to expand...
    Click to collapse
    As @summersofar has correctly said above, DSU does not yet work with bootloader locked, which is why you got the brick. Fortunately, since you have the TMobile version, it can be easily fixed - just put the phone in EDL mode by pressing both Vol+ and Vol- at power up, and then use the MSMDownload tool for TMobile version that has been released, to unbrick it and restore to factory.
    View
    2
    E
    edale1
    nomoipho said:
    Yep. Is there a way to add it back if it fails?
    Click to expand...
    Click to collapse
    I'd imagine a factory restore (via booting to the recovery partition) would re-install that no problem. Also wipe your data, but that's gonna happen when you get to the bootloader unlock anyways.

    As to specifically reinstalling just that? I honestly have no clue how to go about that, I'm not knowledgeable enough about Android's inner workings to even guess. I rarely ADB for anything but the rooting process when I get a new phone. There's a reason I said this guide was more for collecting the info in one place than providing a step-by-step guide, lol. I'm just trying to help everyone else, considering I spent days digging up all the info to try and get my bootloader unlocked.
    View

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