@rocket2nfinity USB debugging and developer options are enabled.
Have I understood your reasoning correctly:
Connect mobile phone to PC (adb devices shows id)
Then install Qualcomm driver
Then put mobile phone into edl mode: adb reboot edl
Reinstall Qualcomm driver
Then start msm?

The Qualcomm drivers are installed. I should also mention that I tried this on a VM running Windows 10. I no longer have a Windows computer. ADB Fastboot is also installed.
USB debugging and bootloader unlocked.
‘ADB devices’ also shows the corresponding ID, but ‘fastboot devices’ shows nothing. Accordingly, there is probably no connection in MSM either.
PS: Qualcomm was installed with driver verification disabled.

Zum ersten Absatz eine Frage: Welche Datei genau müsste man verwenden um den Downgrade Assistenten verwenden zu können?

Hello everyone
I am a beginner when it comes to Ubuntu Touch, but I wanted to try out the system because it's such a great idea. I have a OnePlus Nord N100 with Android 11.

I tried to downgrade the phone to Android 10 following the instructions (https://community.oneplus.com/thread/1541327).
I've tried everything, but I always fail because the MSM tool can't establish a connection.
Is there anyone in Switzerland who could help me with this? A nice meal afterwards would definitely be in order.
Thanks

@Vlad-Nirky not yet, i planned to buy one, but it would be a European version. Thanks for help.

Can anyone tell me what the difference is between a European and an Indian model?