The SMA supports the following SMA 1000 series appliances running SMA 12.5.0 firmware:
EX6000, EX7000, and EX9000 appliances cannot be upgraded to SMA 12.5.0
You can upgrade to SMA 12.5.0 from 12.4.3 version with latest hot fixes.
Upgrading a virtual appliance hosted on ESXI requires network adapter changes. Refer to the SonicWall Support Knowledge Base article at: https://www.sonicwall.com/support/knowledge-base/170502800288963.