Q: Is there a BIOS update for BM6 and ZM6 to support 1.7V Celeron with cC0 stepping?
A: A BIOS update can not help either the BM6 or the ZM6 to support 1.7V Celeron with cC0 stepping. This is a hardware issue. Click here for the information about Celeron processors stepping. Http://support.intel.com/support/processors/sspec/icp.htm