Comcast Business Gateway Firmware Update

Hi.

Two issues that support cannot help me with.

1. The Comcast-supplied "modem" will sometime decide to update its firmware in the middle of the day. This results in 10 minutes or so of downtime. Is there a way to configure this to occur at a certain time?

2. The timestamp on log entries are 1 hour behind. How can one configure the correct time?

Thanks.