System software download started but will not complete
If a system update began dowloading but got stuck or did not finish, try the following:
Check to see if other devices on your network are using too much bandwidth.
When a device is active on your network, they use some of the available bandwidt of your router. Some tasks use more bandwidth than others—like video streaming, gaming, video calls, data backups, etc. If devices are performing these tasks, bandwidth can decrease for other devices. Turn off any device or app that might be using a lot of bandwidth, then check if performance improves. (Tip: If available, use an Ethernet cable instead of Wi-Fi to connect high-bandwidth devices to your network. This frees up wireless bandwidth for devices that need to be connected wirelessly.)
Check for sources of wireless interference.
It's possible that interference from other wireless devices are affecting the wireless functionality of your product. Check for other wireless devices in the area of your product (i.e. another router, cordless phone, wireless printer, smart TV, etc.). To determine if a device might be interfering, try unplugging its power cord or disabling Wi-Fi on the device. If the issue is resolved when a particular device is removed, try placing that device farther away from your product, if possible. Additionally, if the device has a wireless channel setting, try a different channel.
Reboot your router.
Routers may need to be reset from time to time—much like rebooting a computer. Disconnect power from the router for 30 seconds, then wait for it to start up and connect. (Note: Any device connected to the Internet will be interrupted during the reset.)
Reset your product.
Much like rebooting a smartphone, your product might need to be reset on occasion to correct minor issues. For more info, see Resetting your product
Try the putting the speaker into recovery mode.
If the speaker has become unresponsive during or after an update, the speaker can be put in to a recovery mode to resolve the issue. For instructions, see Using Recovery mode