An IMG2 file stores iPhone OS 1.1.x system firmware image for an Apple iPhone device. It contains encrypted system software and data. Apple packages the software and data in iPhone software update files. Users install these update files on their devices to apply an update. For iPhones running OS 1.1.x, Apple used IMG2 files to store system information. Users downloaded these files to install iPhone OS 1.1.x system updates. The files store various information including system software, resource files, and images. They are encrypted to protect contents.
IMG2 files are not common. If double-clicking an IMG2 file icon shows a message needing more programs to open it, helpful programs are listed on this page. The developer of the IMG2 format is unknown. Other programs can use the .img2 file extension too. Please send useful information about the .img2 file type to help update our database.
While .img2 was used in IPSW files, these were 8900 files wrapping an IMG2. An iBoot before version 304 or the S5L8900 processor can parse IMG2 files. Later iBoots and processors don’t support the format. The 8900 format, usually wrapping an IMG2, also requires an early iBoot or S5L8900.
Mac Disk Utility