[Tails-testers] how to automatic upgrade from testing versio…

Hello
I installed testing version 4.5~rc1 of tails by command:

echo TAILS_CHANNEL=\"alpha\" | sudo tee -a /etc/os-release && \
     tails-upgrade-frontend-wrapper

Now I'd like to automatic upgrade but this not work. I know how to do manually but maybe is it any way to do this automatic?

Please help me.

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