Go to Settings > Upgrade (or Maintenance in some versions).
The most likely intent of your request is a technical guide for updating the software/firmware of an satellite receiver or Android box (specifically the Istar A9000 Plus ). However, "Istar" is also a common brand for high-end imaging cameras. Istar A9000 Plus Software Update
Do not disconnect the power during the update process. 2. Update via USB (Recommended) Go to Settings > Upgrade (or Maintenance in some versions)