If you have been searching around for the proper ISOs to use.
These two ISOs are what you need to use.
This is bootable:
cdu_1.5_core_225_A00.iso
After you have burned and booted with the above CD.
Download these three files:
http://ftp.us.dell.com/sysman/OM_6.2.0_SUU_A01.iso.001
http://ftp.us.dell.com/sysman/OM_6.2.0_SUU_A01.iso.002
http://ftp.us.dell.com/sysman/OM_6.2.0_SUU_A01.iso.003
The above files need to be joined:
Windows: copy /b OM* OM_610_SUU_A01.iso
Linux: cat OM* > OM_610_SUU_A01.iso
Burn the resulting ISO file.
Boot from the first DVD and then select Update Firmware. Insert Second CD.