Solved ..

Well.. this is embarrassing, after rebooting the computer one more time, the Qualcomm drivers appaired. Went on to successfully install the original android 10 (ver 10.5.8) (metro-t-mobile ver)

then installed - "Metro - to- Global", preassembled package image of oxogen OS ver 10.5.5 .. ( no trace of Metor-T-Mobil anymore)

Then tried to flash EU firmware OxygenOS_10.5.2 . Then Global OxygenOS_10.5.3 as required for UT install.. both of theas attempts failed. MSM download tool error: "Device not match image (20880)"

Thanks for your info Wally, Id sure like to hear what Ruben did, ? is OS ver 10.5.3 OR 10.5.2 an absolute must to install UT .. ?

Thanks again

Hello All,

Total newbie here with my first posting. I recently acquired a OP Nord N100 (Metro by T-mobile version). model :BE2015 , Build #: 11.0.14.BE82CF . it's currently running android 11 and really hoping to install UT .. I unlocked the boot-loader with unlock token from one-plus. but while attempting to downgrade to the required OS using the MSM Download tool combined with OxygenOS_10.5.3(global). I bricked the phone.

Somehow with no Qualcomm drivers visible in the device manger, and the only likely connection showing was "BE2015" ? I manged to get a good enough connection established for the MSM tool V4.0 (run under administrator) to indicate "connected" , I then clicked "start" , progress bar started but within a second or two the transfer stopped with the error: " Device not match image(20880) ". and the ph...bricked.

I'm now following "un-bricking" example here: https://xdaforums.com/t/opn100-oos-metro-be82cf-unbrick-tool-to-restore-your-device-to-oxygenos.4245499/

Big thank you to : Some_Random_Username

Problem: My laptop,running windows 10, still doesn't have the Qualcomm drivers properly installed. I have tried a few times now deleting rebooting, reinstalling drivers, rebooting. I've also disabled Windows driver signature verification. computer is in "testing mode" , confirmed. I've also tried USB 3 vs USB 2. ports , USB 2 seems to be preferred.

With the device manger open , I press and hold "volume up" and "volume down" and then connect cable to phone . the computer beeps in error and says "USB device not recognised"..and goes into an error loop: repeating every couple seconds. i scan the device manger list as it reappears in the loop , looking for anything with an error (little yellow warning triangle)... nothing

What am I missing here ? How do I get the Qualcomm drivers installed ?

Also: the Metro-T- Mobile variant seems to have a slightly different OS from the rest of the N100s. Was the error presented during my first MSM tool attempt "..Device not match image(20880).." because I didn't have properly installed Qualcomm drivers OR because of incompatible OS image ? (OS_10.5.3 vs OS_10.5.8) ?

Any suggestions would be greatly appreciated.

Thank you in advance.