Download these files by clicking on the link:

AS JBOD Firmeware (MD5: 7418c4aaa59d9e4867621c68432d6fb1)
AS Expander Update Utility (MD5: 49c629c4f59f02c1ddd5eb81fee6e162)
ActiveScale 7.3.1.2 Upgrade (MD5: af5d9bf782a4b59de70b0a39be8c664c)
SSE-3548-fw (MD5: 3b9b751e0ae7e7845f44d312847dc852)