OME 2.01 and compatibility

Hi,

The OME support matrix states (for example) that the supported iDRAC7 agents must be version 1.57.57 or later. Does this mean that OME won't work at all with earlier firmwares? Or is this just a "recommended" version that Dell supports as definitely compatible? We're considering updating to version 2 of OME (from 1.3) but if we have to update every single server to their latest firmware before installing OME 2 it's going to be a long time before we can do the upgrade.

Thanks.