Upgrading firmware should always be done during a planned maintenance window after taking a configuration backup.
Since SonicOS 5.9 is associated with legacy hardware, it may contain unpatched vulnerabilities that exist in newer OS versions (Gen 6 or Gen 7).
Do not download firmware from third-party websites or forums, as these can be modified to include malicious code. How to Upgrade to SonicOS 5.9.2.13 Sonicos 5.9.2.13 Download
: Go to the Downloads center in the left navigation pane.
Beyond CVE-2024-40766, SonicOS 5.9.2.13 may also be subject to other disclosed vulnerabilities: Upgrading firmware should always be done during a
Some older accounts still have FTP access: ftp://ftp.sonicwall.com/pub/software/firmware/ However, this directory is no longer publicly indexed. You need the exact path known from a prior download.
and should not be considered a final destination for any firewall exposed to the internet. How to Upgrade to SonicOS 5
Click to generate a local rollback instance directly inside the internal memory flash.