Sc23350-nmswupd405.rar -

Verify the current firmware version on your device settings menu before attempting an update.

: Since this is legacy software, it often requires older operating systems like Windows XP to run correctly. Users on modern systems (Windows 10/11) may need to use a virtual machine running Windows XP to execute the update utility found within the RAR file. sc23350-NMSWUpd405.rar

Back up any data on the device, as firmware updates can occasionally lead to data loss or system issues if interrupted. What Is Firmware? Types And Examples - Fortinet Verify the current firmware version on your device