@ianus

so now the phone boots up !!
the problem was the recovery.img I downloaded from http://twoot.bin.org.in/nextcloud/index.php/s/2Zk2Lz8cZCdqArT

now I installed trwp an all went fine...

thx for help - have a nice day

@ianus

so now the phone boots up !!
the problem was the recovery.img I downloaded from http://twoot.bin.org.in/nextcloud/index.php/s/2Zk2Lz8cZCdqArT

now I installed trwp an all went fine...

thx for help - have a nice day

@ianus
now I have tested ./halium-install-standalone.sh -p ut -s ubuntu-touch-android9-arm64.tar.gz system.img

and after success I had:

adb shell

root@OnePlus5:/ # cd data
root@OnePlus5:/data # ls
android-rootfs.img rootfs.img

and then I reboot phone

check again and /data is emty ??

@ianus thx for reply
my /data is empty ?

michi@Core5M:~/Downloads$ adb shell
root@OnePlus5:/ # ls /data
root@OnePlus5:/ #

regards

@ianus can I also use Helium-recovery instead of twrp ?

thx for reply

@arubislander
yes, right - no problems during installprocess. but phone does not boot to ubuntu touch.

@arubislander no phone does´t boots in Touch hangs on android boot logo

@arubislander thx for reply

right - the bootlogo is probably from android 11 - other question to run "./halium-install-standalone.sh -p ut -s ubuntu-touch-android9-arm64.tar.gz system.img"
I have the recovery.img from "http://twoot.bin.org.in/nextcloud/index.php/s/2Zk2Lz8cZCdqArT"
installed is that correct ? - because without recovery adb will not run.

thx

so next problem, after successful installation - my phone is in the 1+ logo powered by android ??
I had originally installed a custom rom with trwp - maybe that's the problem ?

@arubislander

yes thats it - my phone was allways in fastboot-mode - new in recovery-mode all was fine

- THX

yes, fastboot devices is ok, but adb devices doesnot show any device when phone is in fastboot mode

usb debugging is on
phone is unlocked