How to fix navigation crashes for T-mobile mytouch 3G?

iPod touch is a digital music player with touch screen capacitive multi-touch, designed and marketed by Apple, which can also be seen as a handheld console for multiple games and applications are available. It supports Wi-Fi to surf the web with Safari, has a mail client, and access to an optimized version of the iTunes store 1. to download music (the downloaded items are automatically addedto the iTunes library when syncing with the computer of the user). It also view videos and photos, and has access to an optimized version of YouTube 2.Presented at the keynote of Steve Jobs in September 2007, the first generation of iPod touch is similar to the iPhone without the phone functions and digital camera.
The third generation was launched September 9, 2009 during the keynote of Apple. The processor has been changed to improve performance by almost 50% and allow the incorporation of OpenGL ES version 2.0 and only models 32 and 64GB have them.
The fourth generation was launched on 1 September 2010 with new generations of iPod nano and iPod shuffle. The new iPod touch is equipped with a digital camera and a camera in front, compatible FaceTime, a three-axis gyroscope and a processor A4. It is the thinnest iPod touch created by Apple.

Characteristics are those of the latest generation of iPod Touch4.
Display: 3.5 inch or 8.89 inch (diagonal) or 960 x 640 pixels, for a definition of326 dpi
Retina display
Processor: Apple A4
RAM: 256 Mo5
Memory: 8 GB, 32 GB or 64 GB
Interface: USB 2, Wi-Fi (802.11b/g/n), Port jack for a universal
Current version of the OS: 4.3.3 (May 4, 2011)
Battery life: 40 hours music and 7 hours in vidéo6, 22 hours audio and 5 hours in video in the first generation
Wi-Fi (802.11b/g/n) (WEP, WPA and WPA2)
Bluetooth 2.1 + EDR (Available for the second generation, configurable from 17 June 2009)
Audio formats supported: AAC, MP3, Apple Lossless, WAV, AIFF
Video formats supported: H.264 (640 x 480 pixels) MPEG4 (640 x 480 pixels)
Weight: 101 grams