Are you updating using the CD-ROM process or on the GUI? Try with CD-ROM. Is DSS set to 32bit or 64it? If this does not work I will need you to send in logs to support@open-e.com as we may have a small update to apply first before new updates.
I have TigmaStor 24000 Storage Server 4U with no CD-ROM on board
So I'm trying to update through GUI by uploading iso image. Server works in 64-bit mode.
Any chance to plug in a CD-ROM. I know that the system does not have one installed but the motherboard should have an IDE port available. If not send email to support with the log file from Status > Hardware > Log then click on the Download button. Do you have any running Snapshots? If so try deactivating them and try again.