Cell phone has Android V 11 image Oxygen OS 11.0.16.BE89BA

[Linus67]

@fischer.poco Well then, since there aren't any more questions. What do you think of Ubuntu Touch?

[fischer.poco]

@Linus67 Well, there are always questions, it's not in dry cloths yet!
The OS is on the phone, after an auto-boot after the installation was completed, Ubuntu ran a system update.
After completion, a reboot was executed.... Then / and since then the phone has stayed hanging at the point after every boat (picture)

Text (It couldn't be better):

The Bootloader is unlocked and Software
integrity cannot be guaranted. Any data
stored on the Device may be available to
attackers. Do not store any sensitive data
on the device

Visit this link on another device:
g.co/ABH

PRESS POWER KEY TO PAUSE BOOT

No matter what I press, the quiet button and the start button or
just the start button... this picture always appears ??
I once had a screen with Ubuntu and various options when I plugged in the USB cable, but I couldn't replicate this event. Any idea? Event. Android back on and the whole thing from the beginning? Did I miss something??

[messayisto]

@fischer.poco Does it boot after this notification, when you dont press any button? If yes, then everything is fine. This notification is shown on every device when no g***le-os is installed. See it as a sign of freedom.
If the device is not booting at all after this text, then something went wrong with the installation.

[fischer.poco]

I've now made it to the point: Reboot to Fastboot, and tried installing Zbuntu again with UPports Installer. The following error occurred:

[fischer.poco]

@messayisto Yes, I think the error was the same as during installation. The only strange thing is that Ubuntu started a system update after installation? There might have been an error there.

[messayisto]

@fischer.poco Sorry, I cant help you in this case. I was assuming that UbuntuTouch successfully started after the unlock-notification.
If the installation failed, someone else has to help, please.

[fischer.poco]

@messayistoIt's OK, thanks for the help... It'll be okay, it's the first time.

[Linus67]

@fischer.poco Switching to the Inactive Slot (A Common Cause of Boot Loops)
The OnePlus 10 uses a so-called A/B partition system. If the update or ROM was installed on the wrong slot, the phone will not boot.

• Connect the phone to your PC via a USB cable (make sure the Android Platform Tools / ADB & Fastboot are installed).
• Open the Command Prompt (CMD) in the Platform-Tools folder on your PC. Type: fastboot devices (your device should be listed here with a serial number).
• Check the current slot with: fastboot getvar current-slot
  Switch the slot.
• • If it says “a,” type: fastboot --set-active=b.
• • If it says “b,” type: fastboot --set-active=a.
• Restart the device with: fastboot reboot

Give it a try. Of course, there's no guarantee.

[fischer.poco]

@Linus67 Hello, thanks for the info. Since Ubuntu is already installed, I first have to reinstall Android 10. I think I need to create a WIN 11 partition under Linux and then.... An idea how this will continue??

[Linus67]

@fischer.poco
You can also install ADB on Linux.
Don't you have internet access to look up this information quickly?

[fischer.poco]

@Linus67 Well, I had already loaded the platform tools yesterday to do the OEM unlock and prepare fastboot, and then continue with UBports. Question: where can I get an app.apk that is being asked for. That will be the Oxygen-10.... build?

[Linus67]

@fischer.poco