Portenta x8 update problem

Hi all,
I am new for Arduino and using Portenta x8.
I can not update for OS Release V.399 although watched the instructions.
I ran these commands:
wget https://downloads.arduino.cc/portentax8image/399-finalize-update
chmod +x 399-finalize-update
sudo ./399-finalize-update

but last command stucked the output below:

Failed to enable unit: Unit file tee-supplicant.service does not exist.

By the way,

cat /etc/os-release
ID=lmp-xwayland
NAME="Linux-microPlatform XWayland"
VERSION="3.3.2-425-399-production-portenta-x8"
VERSION_ID=3.3.2-425-399-production-portenta-x8
PRETTY_NAME="Linux-microPlatform XWayland 3.3.2-425-399-production-portenta-x8"
HOME_URL="https://foundries.io/"
SUPPORT_URL="https://support.foundries.io/"
LMP_MACHINE="portenta-x8"
LMP_FACTORY="arduino"
LMP_FACTORY_TAG="devel"

I moved your topic to an appropriate forum category @thayit .

In the future, please take some time to pick the forum category that best suits the subject of your topic. There is an "About the _____ category" topic at the top of each category that explains its purpose.

This is an important part of responsible forum usage, as explained in the "How to get the best out of this forum" guide. The guide contains a lot of other useful information. Please read it.

Thanks in advance for your cooperation.

Any progress with your issue? Did you try flashing it manually?

Yes, there is still an issue, unfortunately.
I didn't try flashing it manually.

I'd give that a try and posts your results.

Please tell me how can I do that
Are there any documents

https://docs.arduino.cc/tutorials/portenta-x8/user-manual/#update-using-uuu-tool

Follow these instructions or create your own image. Instructions for creating your own image are in the column to the left.