ANY HELP HERE GREATLY APPRECIATED.....

I am a typical IT Admin who has been delegated to "Phone Systems Admin" and essentially anything that plugs into a wall...

I am trying to add several IPT2010-SD phones to a CIX200 & CIX40- I know very entry level basics of these CIX's. Each one of these phones has a different software version also. Now.. when one specific version of the software is on the phone- specifically: DIP2T2MC, I can make it functional/connect with the CIX. but any of five other versions: DIP2Txxx I can not and get the IPT:E11 error.

Through several hours of research I have found the:

CAUSE: NO RESOURCES AVAILABLE
HOW TO RESOLVE: CREATE A NEW IPT TERMINAL IN PROG 200. OR, CHANGE DESTINATION BIPU HAVING SOME IDLE RESOURCES

But I can not find the steps to take or path to do this fix.

It seems logical that if I could change/update/flash the software version of the phones to the one that works fine, that would be an option too?

AGAIN.. any help here much appreciated in advance-