General PSA: DO NOT use the DSU Loader on the N200 - you will BRICK

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lzgmc

Senior Member
There have been multiple reports of people bricking their devices after flashing a GSI with the DSU Loader found in Developer Options. In fact, I was probably the first guy to brick my N200 by installing a DSU to it. After installing a DSU and rebooting, the phone will attempt to boot the GSI and then show a Qualcomm CrashDump screen. After forcing the device to reboot, the phone will show a screen that says "Your device is corrupt" and will no longer boot. Although it is possible to boot into Fastboot mode, the phone will refuse to boot to recovery, and many Fastboot commands do not work since the bootloader is locked. Since there are no MSM tools available yet and the remote service team at OP support doesn't have the ROM files for this phone, your only option at this point would be to request a repair from OnePlus under warranty.

While it may be possible to use the DSU Loader on the N200 without bricking after unlocking the bootloader as shown in this thread, I still would recommend against it until unbrick tools are released.
 
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EnumC

Senior Member
Dec 22, 2014
125
74
Cupertino
enumc.com
TCL 10 5G
OnePlus 8T
Can you still boot into fastboot mode (hold vol down while booting)? You can try switching the active slot to a or b and see if it will boot that way.

Code:
fastboot --set-active=b

Also, if you can boot into recovery, try the "Erase everything" option.
 

lzgmc

Senior Member
Can you still boot into fastboot mode (hold vol down while booting)? You can try switching the active slot to a or b and see if it will boot that way.

Code:
fastboot --set-active=b

Also, if you can boot into recovery, try the "Erase everything" option.
You can still boot into fastboot by holding the volume up+down buttons while booting. However the bootloader won't let you switch the active slot if the bootloader is locked.

Even if you select Recovery mode in fastboot mode, the phone will still display the device is corrupt error and refuse to boot into recovery.
 

Ethanvio

Member
Aug 18, 2021
37
4
There have been multiple reports of people bricking their devices after flashing a GSI with the DSU Loader found in Developer Options. In fact, I was probably the first guy to brick my N200 by installing a DSU to it. After installing a DSU and rebooting, the phone will attempt to boot the GSI and then show a Qualcomm CrashDump screen. After forcing the device to reboot, the phone will show a screen that says "Your device is corrupt" and will no longer boot. Although it is possible to boot into Fastboot mode, the phone will refuse to boot to recovery, and many Fastboot commands do not work since the bootloader is locked. Since there are no MSM tools available yet and the remote service team at OP support doesn't have the ROM files for this phone, your only option at this point would be to request a repair from OnePlus under warranty.

While it may be possible to use the DSU Loader on the N200 without bricking after unlocking the bootloader as shown in this thread, I still would recommend against it until unbrick tools are released.
While I'm guilty of Bricking my phone by doing exactly what you describe .. there's a little confusion on ... t-mobile locked phones and the ones bought unlocked from 1+ or Amazon....any difference in how to fix those 2.. I'm on a phone bought directly from 1+
 

Ethanvio

Member
Aug 18, 2021
37
4
While I'm guilty of Bricking my phone by doing exactly what you describe .. there's a little confusion on ... t-mobile locked phones and the ones bought unlocked from 1+ or Amazon....any difference in how to fix those 2.. I'm on a phone bought directly from 1+
I'll answer my own question .. it don't matter .. I also tried switching from b to a but it won't allow it as it is locked
 

Ethanvio

Member
Aug 18, 2021
37
4
Did you by any chance enable OEM unlock in the developer setting before it bricked? If you haven't tried already, what happens when you try to unlock the bootloader in fastboot?
Won't allow it because it's locked .. so you can't unlock the bootloader. Hopefully oneplus will release the rom soon or there's a work around this
 

edale1

Senior Member
Sep 5, 2016
124
66
I wish I saw this post two weeks ago.
me too , even tho i knew of this place i went ahead blindly and did it ... now my phone is bricked and waiting for package from oneplus so i can send it for repairs .. i wish the rom was available .. this is a very easy fix
This thread is a whole 1 day old, so don't feel bad about missing it weeks ago.

I believe there's a stock ROM here:
But I also believe you need your bootloader to already be unlocked to actually fix it. Not sure though.
 
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Dimitrimem

Senior Member
Jan 19, 2018
77
8
Honolulu
This thread is a whole 1 day old, so don't feel bad about missing it weeks ago.

I believe there's a stock ROM here:
But I also believe you need your bootloader to already be unlocked to actually fix it. Not sure though.
at this point the rom wont be enough huh! .. the downlooad tool is also a must to fix the lock on the bootloader ...
i guess its worth saying this is for the fully paid one from the oneplus website here in US
 

ThatNiggaDurk666

New member
Dec 15, 2021
4
0
so yeah i did exactly this and i just got the 1+ nord n200 5g ive tried everything including msm download tool my problem is when holding volume up and volume down and power it brings up fastboot mode but the moment i let one go it goes off and brings back the corrupt error and then same thign if you try to just hold it and i think its cause my pc to not register the phone is connected please someone help im lost at this point
 

lzgmc

Senior Member
so yeah i did exactly this and i just got the 1+ nord n200 5g ive tried everything including msm download tool my problem is when holding volume up and volume down and power it brings up fastboot mode but the moment i let one go it goes off and brings back the corrupt error and then same thign if you try to just hold it and i think its cause my pc to not register the phone is connected please someone help im lost at this point
Have the T-Mobile or Metro variant? See this thread:
Have the unlocked variant? You're screwed. Contact OnePlus for a repair.
 

mrsharpp

New member
Mar 1, 2022
2
0
There have been multiple reports of people bricking their devices after flashing a GSI with the DSU Loader found in Developer Options. In fact, I was probably the first guy to brick my N200 by installing a DSU to it. After installing a DSU and rebooting, the phone will attempt to boot the GSI and then show a Qualcomm CrashDump screen. After forcing the device to reboot, the phone will show a screen that says "Your device is corrupt" and will no longer boot. Although it is possible to boot into Fastboot mode, the phone will refuse to boot to recovery, and many Fastboot commands do not work since the bootloader is locked. Since there are no MSM tools available yet and the remote service team at OP support doesn't have the ROM files for this phone, your only option at this point would be to request a repair from OnePlus under warranty.

While it may be possible to use the DSU Loader on the N200 without bricking after unlocking the bootloader as shown in this thread, I still would recommend against it until unbrick tools are released.
If you have a spare phone lying around, try flashing a GSI to see what custom ROM developers are up to these days. Since installing a GSI only requires Even with installing TWRP recovery, it only worked after I had successfully installed magisk on the device by flashing the magisk patched boot.
 

Springles2

Member
Apr 30, 2022
6
2
I just wanted to let you all know. If this happens to you, you CAN use the MSM recovery tool. I found the T-Mobile variants' EDL firmware in the OnePlus community repositories. Let me know if you need them, as I will upload them to a thread with a step by step recovery guide if needed. I had bricked my device by trying the GSI image through DSU Loader, but was successfully able to recover the device with the MSM tool
 

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    There have been multiple reports of people bricking their devices after flashing a GSI with the DSU Loader found in Developer Options. In fact, I was probably the first guy to brick my N200 by installing a DSU to it. After installing a DSU and rebooting, the phone will attempt to boot the GSI and then show a Qualcomm CrashDump screen. After forcing the device to reboot, the phone will show a screen that says "Your device is corrupt" and will no longer boot. Although it is possible to boot into Fastboot mode, the phone will refuse to boot to recovery, and many Fastboot commands do not work since the bootloader is locked. Since there are no MSM tools available yet and the remote service team at OP support doesn't have the ROM files for this phone, your only option at this point would be to request a repair from OnePlus under warranty.

    While it may be possible to use the DSU Loader on the N200 without bricking after unlocking the bootloader as shown in this thread, I still would recommend against it until unbrick tools are released.
    1
    DSU runs fine once you are bootloader unlocked. I can confirm this myself.
    1
    I wish I saw this post two weeks ago.
    me too , even tho i knew of this place i went ahead blindly and did it ... now my phone is bricked and waiting for package from oneplus so i can send it for repairs .. i wish the rom was available .. this is a very easy fix
    This thread is a whole 1 day old, so don't feel bad about missing it weeks ago.

    I believe there's a stock ROM here:
    But I also believe you need your bootloader to already be unlocked to actually fix it. Not sure though.