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'''IOS30''' was used by [[3.0|System Menu 3.0]], [[3.1]], [[3.2]] and [[3.3]]. It added USB Keyboard support, and [[Revolution OS]] includes a check to only show [[error 001]] on IOSes between IOS30 and IOS253, inclusive.

'''IOS30''' was used by [[3.0|System Menu 3.0]], [[3.1]], [[3.2]] and [[3.3]]. The main difference from [[IOS28]] is that <code>DVDLowUnencryptedRead</code> now allows two other regions to be loaded; these regions are used to detect [[drivechip]]s and show [[error 001]].

IOS30 was the first modular IOS released, although [[IOS28]] was released later.

IOS30 also added USB Keyboard support.

Together with [[IOS16]], [[IOS31]], and [[IOS37]], IOS30 did not have its ES_Identify and [[:/dev/flash]] access fixed with [[3.3rev03]]. With the exception of IOS16, which got stubbed in [[4.0]], all of these were fixed in [[3.4]].

Together with [[IOS16]], [[IOS31]], and [[IOS37]], IOS30 did not have its ES_Identify and [[:/dev/flash]] access fixed with [[3.3rev03]]. With the exception of IOS16, which got stubbed in [[4.0]], all of these were fixed in [[3.4]].