Hello! rkustreamuser9,
A friendly welcome from the Roku Community!
Thank you for letting us know about the remote battery drain issue you are experiencing. We're pleased to assist.
To update the remote firmware you will need to perform a device restart. This can be performed by navigating to Settings > System > System Restart
Once your remote has updated to the latest firmware please test the remote for the next week and monitor the battery usage.
If you have any further questions or if this is still an issue, please let us know.
Thanks,
Arjiemar