Replace /dev/sdX with the correct target device.
: Recommended for most 64-bit Intel or AMD physical hardware using a USB flash drive. Critical Installation Notes Download pfSense Community Edition pfsense 251 download iso link
pfSense version 2.5.1 was released on March 30, 2021 and reached its End of Life (EOL) on March 30, 2022 . It contains known security vulnerabilities and bugs that have since been patched in newer versions (2.6.0, 2.7.x, and Plus). It is strongly recommended to use the latest stable release (currently 2.7.2 or newer) for any production or internet-facing deployment. Replace /dev/sdX with the correct target device
Remember to verify the integrity of the ISO file using the provided SHA256 checksum. pfsense 251 download iso link