Interested in Jailbreaking and Unlocking your iPhone, iPod touch, or iPad but can’t determine which version of iOS you’re running, or what your iPhone baseband (i.e. modem firmware) is? Just get a new device and not sure if it’s been updated yet? Some Jailbreak methods only work with certain software versions and some Unlocks only work on certain modem firmware, so they’re important to know before you start. Luckily they’re easy to find.

To find your iPhone, iPod touch, or iPad software version, and your iPhone modem firmware:

1. Tap Settings
2. Tap General
3. Tap About

iOS software version

At the bottom you’ll see Version in bold on the left, and a number series on the right. The current version of iOS as of this writing is 4.2.1. If you have older software you might see 4.1 or something similar and if you have iOS 5.0 or 5.0.1  or 5.1 it will tell you.