Determining the Firmware Version
If you’ve already seized a device, you’ll want to make sure that its firmware version is supported by the methods in this book. To determine the version of operating firmware installed on the iPhone, tap on the Settings icon, then select General About. The version number will be displayed with a build number in parentheses. Before proceeding, ensure that the firmware version of the device falls within the range of versions supported by this document.
Warning
If the device is passcode protected, you will need to circumvent this security measure in order to determine the firmware version. See Chapter 3 for more information.
Never upgrade a device running v1.x firmware to v2.x, or you will destroy evidence. Use the latest version of v1.x software for v1.x devices.
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