Hackers like MuscleNerd are advising those wishing to retain their jailbroken devices not to update to newly released iOS 5.1.1 devices because this can kill all the jailbreak tweaks that they have in their devices.
It was reported earlier that the latest iOS update will not harm jailbreak tweaks in A4 devices. Now we can confirm it as far as RedSn0w jailbreak is concerned.
Usually, jailbreakers are advised to avoid Apple’s iOS updates just after their release, until hackers have it confirmed that the latest software can be jailbroken. However, a new report says that it is perfectly safe to update your A4-powered devices to iOS 5.1.1 without losing your Redsn0w jailbreak.
Apple traditionally patches the exploits used by jailbreakers with major iOS releases, but it often leaves them open with smaller updates. That is certainly the case with iOS 5.1.1. Redmond Pie claims to have successfully jailbroken the latest release using Redsn0w:
We have tested and can confirm that current latest version of Redsn0w jailbreaking tool can be used to jailbreak Apple’s latest iOS offering tethered on A4 powered devices such as iPhone 4, iPad 1, iPod touch 4G and below, thus allowing you to have continued access to all of the benefits of a liberated iOS device.
iOS 5.1.1 is only a minor update. Thus, you may not want to update at all and just stick with your existing jailbreak instead. However, people who do want the bug fixes and patches that the latest software brings, can jailbreak their device again after updating.
Source: Cult Of Mac