Setelah IOS 4.2.1 dirilis, Dev-Team telah mengupdate Redsn0w versi 0.9.6 Beta 4 untuk jailbreak iPhone 4, 3GS, 3G, 4G iPod touch, 3G, 2G dan iPad.
Ada banyak komentar dan keluhan di berbagai macam jailbreak blog tentang ikon Cydia yang putih dan Crash pada Safari setelah jailbreak perangkat mereka.


Oleh karena itu, Dev-Team telah mengirimkan update blog posting baru bahwa konsep jailbreak "tethered" cukup baru bagi banyak orang, simak ulasan berikut :

The notion of a “tethered” jailbreak is pretty new to many people, so here’s a quick rundown on what to expect:

1. If you’re on an iPhone3G, old-bootrom iPhone3GS, or non-MC ipt2g, life is easy. redsn0w installed an untethered jailbreak and so nothing below applies.
2. “Tethered” does not mean you cannot boot at all without PC/Mac assistance. If you have not installed any tweaks that hook into important programs like SpringBoard or CommCenter, your device will actually boot. However, jailbreak programs like Cydia won’t work (and Cydia may still have a white icon). Also, certain built-in apps that had to be moved by Cydia will fail (Safari being the most noticeable example).
3. If you’ve installed MobileSubstrate tweaks that hook into SpringBoard or other important programs, your boot will actually fail (you’ll get stuck at the Apple logo). You need to use redsn0w to “Just boot tethered right now”.

Remember, @comex and others are working on a way to untether the 4.2.1 jailbreak. Meanwhile, the above 3 points hopefully will make it all seem less confusing :)

Anda dapat menghindari alasan di atas untuk menikmati jailbreak bebas dari bug (yaitu Icon cydia putih / atau crash pada safari ), tapi saya sangat merekomendasikan untuk menunggu jailbreak untethered Comex pada 4.2.1 yang diharapkan dapat menjadi sangat profesional (still no ETA).