| 4.2rev04 update |
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| Date history |
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| Release date |  June 22, 2010
 June 22, 2010
 June 22, 2010
 June 22, 2010 |
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| System |
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| System Menu IOS | IOS80 |
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| Added IOS | IOS58, IOS80 |
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| Changed IOS | IOS9, IOS12, IOS13, IOS14, IOS15, IOS17, IOS21, IOS28, IOS31, IOS33, IOS34, IOS35, IOS36, IOS37, IOS38, IOS55, IOS56, IOS57, IOS61 |
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| Version History |
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| Preceded by | 4.2rev03 |
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| Major revision | 4.2 |
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| Succeeded by | 4.3 |
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The 4.2rev04 update was a batch IOS update released shortly before 4.3, much like 3.4rev02. It added signature checks to ES_AddTitleFinish and fixed the HackMii Installer exploit.
June 22, 2010
June 22, 2010
