As response to #58633
Many thanks.
This worked for me after almost a year on this issue of B&O logo boot loop.
As a side note, I did not have to wait and keep short circuited Vol- GND all the way to completion of rebooting. As soon as the reboot ‘wheel’ appeared I placed the jukebox on its soundheart base and waited. After about 10 mins I got the initialisation screen and a functioning jukebox.