The iDOS application is a DOS emulator for the iPhone, iPod touch and iPad. It was launched in October, but quickly pulled from the App Store. Now it’s back — but the new version is missing one key feature: The ability to copy files to the app. In other words, you can run the DOS emulator on your iOS device, putz around with DOS commands, and even run any of the 6 shareware games that come preloaded with the app. But you can’t easily install any third party DOS software.
If you were one of the people who managed to install iDOS before it was removed from the App Store, you may receive an update notification today. But if you value the ability to use the file-sharing feature in iTunes to copy files to iDOS and install crazy things like Windows 3.1, then don’t update.
On the other hand if you want to check out some of the other new features, you may just want to backup your app before downloading the update so you can restore if necessary.
The new iDOS app is available as a free download from the App Store.
Update: Download Squad has details on how you can use a free app called iPhone Explorer to copy files to your iPhone, iPod touch or iPad without using iTunes — thus allowing you to use the new version of iDOS and still install third party apps. I feel silly for not having thought of this before. PhoneDisk should also work.