Hello,   Create a new group with that member alone.  I would NOT use the Remote Setup Wizard to do this.  That sets the RAID policy forcing you to wait until that finishes before you can upgrade the firmware.   I would instead use the Serial port.  You will then only need to configure one network port and the new Group IP.  Once you answer the basic questions are at the GrpName> cli prompt you can then  transfer the upgrade kit and upgrade the firmware.    Once you run the 'update' process and restarted the array, log back in and verify it's at the new revision.  GrpName>show member   will show that.   At the CLI run "reset" to return that unit back to factory reset, and you can now add it into your other group.   Regards,   Don 
I have a new array that is v7 and I am trying to add to a v8 group.  It won't join the group because of the version mismatch.  How do I upgrade it to v8 so I can join it to the group?  Thanks.
Equallogic - How to upgrade a new array before adding to group