Here's some good news for iOS users. MuscleNerd has just confirmed on his twitter account that he is about to release a new version of Redsn0w that makes patching Cydia on jailbroken iOS 4.2.1 device much easier. The new version will include OpenSSH to ease the process of installing Cydia on iOS 4.2.1.
MuscleNerd: @N44GGA we're about to release a small redsn0w update that will make that much easierSo, the new version will include OpenSSH and you'll not need to install OpenSSH in the previous guides to patch the broken Cydia. Anyway, we'll keep you updated whenever the tool is out, or may be they surprise us with the new version of Cydia compatible with iOS 4.2.
N44GGA: @MuscleNerd just need openssh included thanx
MuscleNerd: @N44GGA yep that's what it will have :)
