Getting started

This document describes the procedure of updating BIOS on an SN-M-Series-520 firewall from version R1.04 to version R1.05.

BIOS can only be updated from the SNS firewall’s web administration interface.

BIOS versions on SN-M-Series-520 firewalls

Version	Can be installed on version	Version release notes
R1.05	R1.04	- An issue that occurred while changing the PCR was fixed.

 

Date	Description
April 23, 2026	New document