Re-imaging damaged classmate

[Bill McKinney]

This situation seems unusual enough to start a new thread, nothing found.
We're a rookie team that had a hellish experience at regionals with a dead classmate. Amazingly we borrowed one and went on to advance to St. Louis (very fast minibot) So we just got our warranty replaced classmate back and have to reformat.
The question is whether all previous updates need to be installed in sequence, or whether the final update is inclusive of all previous versions. A blow by blow description of the imaging sequence would be greatly appreciated. We sure don't want to show up at the championships with only a morning to solve unforeseen probs.
Thanks very much.