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. We'll show you where to look, after the break.
To find your iPhone, iPod touch, or iPad software version, and your iPhone modem firmware:
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. Note the number down somewhere convenient. (You can ignore any numbers or letters in parenthesis, that's the actual build identifier and you won't typically need it.)
Next scroll down to the very end of the About page and near the bottom you'll see Modem Firmware (what's called the Baseband). The current Modem Firmware is 03.10.01. Again, note the number down somewhere convenient.
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