HomePod Setup Failed (300254)
I was having trouble connecting my Kitchen OG HomePod to its Apple TV. Did the unplug - press - red light - three beeps, then, after the 'Setup HomePod' appeared on my iPhone, I went through all the steps and got 'Setup Failed (300254)'.
Got out a HomePod mini to test and it connected to my Kitchen Apple TV as expected. Conclusion: Kitchen HomePod is broken. Fetched down my Bedroom OG HomePod (don't use it much) and did the unplug - press - red light - three beeps, but still got the 'Setup Failed (300254)' on this HomePod (it was connecting fine to the Bedroom Apple TV).
Also completely removed the Kitchen HomePod from the Home app and tried again. Same result.
Apple TVs are connected to router by Ethernet. Two-Factor is on. iCloud Keychain is on. Conclusion: I have no idea what is going on...
HomePod