The R2-Delta upgrade was a software upgrade that was available to R2-series astromech droids. In 24 ABY, Catch received the Delta upgrade, which allowed him to make faster navigation computations.
Appearances
- X-Wing: The Bacta War (and unabridged audiobook) (First mentioned, in book)
- The New Jedi Order: Dark Tide I: Onslaught (Mentioned only)