I am trying to find an upgrade toolkit for 2.50AD to 2.60AD. Anyone know how to get a hold of one?

We have been sent an upgrade toolkit by MBS Australia that handles 2.60AU AD to 3.60AU, after that the upgrade gets handled by the standard 3.6 to 3.7 upgrade toolkit so you do a sort of double jump if you want to go from 2.6AD to 3.7. I don’t know whether the toolkit was created by MBS Australia or whether MBS US will have a similar toolkit.