HAOS update failed on Home Assistant Blue

I managed to get me a Home Assistant Blue after my RPi3 stopped working.
I got it yesterday, started from scratch, updated everything.
This went mostly good.

But when updating the OS, it won’t do it :

it’s still on :
Home Assistant OS 5.13
Every time I click the update, the system restarts, but no update is done :
I already tried the command line method :

ha os update --version 7.0

without luck :
Is there a way I can force it to work? or where ca I find the logs to see what’s wrong?


Update to 6.6 first,then to 7 as per that thread.