Hi there Radio-Siri-Homepad,
We understand Siri isn't responding properly when you ask to play a radio station through your HomePod. There are some steps you can walk through to possibly help. Test Siri after each step.
- Restart your HomePod with the Home app: If HomePod or HomePod mini isn't responding
- Restart your other Apple device that manages your HomePod (iPhone or iPad).
- Next, reset your HomePod: Reset HomePod or HomePod mini
- You mentioned this was after a software update, make sure it is on the latest OS: Update HomePod
- Test Siri playing a radio station from your other Apple device using the same Apple ID.
If you continue to have Siri not respond correctly after these steps, reach out to Apple Support directly. You can reach them here: Get Support
You can also find the support phone number for your region at this link: Contact Apple for support and service
Take care.