CR 100 server bios update

Hello,

I would like to update a CR 100 bios which currently has Ironport customized bios ver 1.1.1.

http://www.dell.com/downloads/global/solutions/industry_apps/OEM_CR100_Server_Spec_Sheet.pdf?..

When trying to update it to any CR 100 or R200 bios, the updater fails.

Is there any solution?

Thank you, A.