Pls contact support@orivision.cn for the latest firmware information. By the way, please let us know in your email the version number of your existing software and why you need to update the firmware. After get the newest firmware, pls follow the steps as below: Step 1: Download the .rar file, do not unzip the file Step 2: Log in to your Encoder or decoder web user interface and click the System button. Step 3: Upload the .rar file and then click the Upgrade button. (Note: During the upgrade process, don't refresh or close the webpage, and don't power off. If you are prompted that the upgrade failed, pls don't reset it, just reboot it.) Step 4: When the system prompts that the upgrade is successful, Pls reboot your encoder to finish installing updates.