If you’re sitting on a first generation Chromecast patiently awaiting that update that enables Spotify streaming, your wait is over. Today a new firmware update is rolling out to the first generation Chromecast that enables support for Spotify. The update shows as version 1.16.44433.
If you want to manually check for the update, pull out your phone/tablet and open up the Chromecast app, select your device, select the Menu button in the top right corner and hit “Reboot Chromecast”. The update could take up to two weeks to hit your device, so make sure your device is turned on and connected to WiFi.Via: Android Central