Sonicos 5.9.2.13 Download May 2026

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.

Published: October 12, 2023 | Updated for Archive: April 24, 2026

If you are still managing a legacy SonicWall Gen5 firewall (such as the TZ 105, TZ 205, TZ 215, NSA 220, NSA 250M, or NSA 2400), you may have come across the firmware version SonicOS Enhanced 5.9.2.13-13o. Sonicos 5.9.2.13 Download

This release, while no longer the latest generation of SonicWall security software, remains a critical stability and security release for the aging Gen5 platform. Below, we provide a complete guide on what this update includes, why it matters, and where to download it.

Prerequisites:

Upgrade steps (via web UI):

Rollback: The previous firmware remains in the backup partition unless overwritten. Some older accounts still have FTP access: ftp://ftp

Warning: Downgrading from a newer branch (e.g., 6.5.x) to 5.9.2.13 is not supported and will likely brick the partition. Never downgrade across major versions.