determining miniroot revision

Hi guys

I have a bunch of x4100's x4140's etc with solaris 10 update4 running on them but I suspect that when a lot of these boxes were originally built, the jumpstart process used an update2 miniroot, now as far as i understand it, the miniroot used at jumpstart is the miniroot that stays on the box (regardless of the full solaris update level)

My question is this, apart from obviously eyeballing the miniroot version at boot time, is there any way from within my update4 OS to check whether I am actually running an update2 miniroot

Any help on this would be great

Cheers

You can obtain that if you access the iLOM using the web browser