I'm stuck at step 1 of the "Installing OS X iPhone" section of the iPhone Developer Program User Guide. Step 1: Download the OS X iPhone Disk Image (.dmg) from the iPhone Dev Center for the apple device you are using. I've scoured the site to no avail. I did find something on the apple forums that stated the following: The disk image used to be available when beta versions were being distributed. The only way to get the v2.0 firmware (iPhone OS) is to use iTunes and upgrade to the latest version. You have to click "other" although the correct firmware version is selected, then find the ISPW file that is in the /user/library/itunes/ folder and point to that. Then you can follow the how to and everything starts making sense. Apple's how to is just out of date on this. I've scanned my entire hard drive for all .ispw files, and still no dice. I'm at a dead end at this point, so any suggestions are welcome. Thanks.