: Check the official websites of companies like Streamit or Teletek Electronics if they are the manufacturers of your specific IRIS model.

This is the most common method for manual downloads like the .rar files you are looking for.

: Use a USB drive (typically 32MB or larger) formatted to a compatible file system.

Navigate to > Device Preferences (or About ) > System Update . Select Local Update to begin the process. Method 2: Update via Internet (Network Update)