The iPhone Dev team has announced the release of a new update to the Redsn0w jailbreak software that is squarely aimed at developers. This new jailbreak application has been built to recognize the recently launched iOS 4.2.1 GM update and consequently to help jailbreak app developers get their applications ready for the next public release of iOS.
What this application can do is to let users who run this software to install jailbreak apps without having to run Cydia – the popular jailbreak app store. The Dev Team writes,
“We’ve made some updates to redsn0w to make it easier for jailbreak developers (and tinkerers) to get their programs ready for 4.2.1. As noted above, the public version of Cydia (and MobileSubstrate too!) is not 4.2.1-compatible. redsn0w will now let you install your own custom bundles independent of Cydia (the bundle can actually be Cydia if you’ve compiled it on your own). These bundles can be up to 15MB in size, and should be in the form of a gzip-compressed tar file.”
Unfortunately, if you are looking at unlocking your iPhone as well, you should stay away from this for now. Otherwise, if you are curious to see how to go about it, click here to read all the instructions from the horse’s mouth.