FreeNAS® 9.1.1 can be downloaded from here. FreeNAS® is available for 32-bit (x86) and 64-bit (x64) architectures. You should download the architecture type that matches your CPU's capabilities.
The download page contains the following types of files. Download one file that meets your needs:
- GUI_upgrade.txz or 8_0_x_LEGACY_GUI_Upgrade.xz: this is a compressed firmware upgrade image. If your intent is to upgrade FreeNAS®, download the correct file for your architecture and version and see the section on Upgrading FreeNAS®. Use 8_0_x_LEGACY_GUI_Upgrade.xz if you are upgrading from version 8.0.1BETA3 through 8.2.0-BETA2. Use GUI_upgrade.txz if you are upgrading from version 8.2.0-BETA3 through 9.1.0.
- .img.xz: this is a compressed image that needs to be written to a USB or compact flash device. Burning an IMG File describes how to write the image.
- iso: this is a bootable installer that can be written to CDROM. Installing from the CDROM is described in more detail in Installing from CDROM.
Each file has an associated SHA256 hash which should be used to verify the integrity of the downloaded file before writing it to the installation media. The command you use to verify the checksum varies by operating system:
- on a BSD system use the command sha256 name_of_file
- on a Linux system use the command sha256sum name_of_file
- on a Mac system use the command shasum -a 256 name_of_file