It was updated through (and including) version 3.1.3 (release date February 2, 2010). The first generation iPod Touch and iPhone have iPhone OS 3.1.3 as their newest available version. All iOS versions from 3.2 until 4.0 were made specifically for the iPad.
What do you need? What are the bare essentials you need to get started in fly fishing? Well, you need that basic rod, reel, and line outfit in one form or another. You need a rod, you need a reel, you need a line, and you need a leader.
Fly fishermen use hand tied flies that resemble natural invertebrates, baitfish, other food organisms, or lures to provoke the fish to strike (bite at the fly). Fly fishing can be done in fresh or salt water.