Download iOS 4.2.1 ipsw for iPod Touch 2G here. Download iOS 4.2.1 ipsw for iPad WiFi/3G here. Sometimes you will get a corrupted file when you download the iOS 4.2.1 update using download managers. So its better to download these ipsw files using your web browser. How to update your iPhone, iPod Touch or iPad to iOS 4.2.1 in offline mode: Hay muchas razones por la que querer descargar un vídeo de YouTube a tu PC. Puede que ya estés harto de los anuncios embebidos del portal de vídeos de Google, quizás no quieras perder nunca ese vídeo tan especial y tengas miedo de que YouTube lo elimine algún día o tal vez te hayas cansado del buffering causado por tu conexión lenta. 17/12/2012 Apple has just released the very final version of iOS 4.2.1 for iPhone 4, iPhone 3GS, iPhone 3G, iPad and iPod touches. This version of iOS brings a number of new features for iPhone, iPad and iPod touch users including: Multitasking, Folders and Game Center for iPad, AirPrint, AirPlay, and other system wide changes and improvements.. If you want to keep your jailbreak and unlock, you better