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Specifically designed for Android 2.2 Froyo (the version commonly found on Android tablets such as the
Advent Vega), z4root is the ideal utility for gaining root access on an Android tablet. Sadly not available on the Market, you can download the free utility direct to your tablet from
iamjake648.com/z4root.apk or from
handheld.softpedia.com.
After download you will need to drag down the status bar and tap the downloaded .APK file in order to install the software. Next head to your programs list where you should find z4root listed at the bottom.
Tap the icon – you will be given three options:
Root: this roots your device. Before selecting this, go to Settings > Applications > Development and ensure that USB debugging is enabled.. When chosen, the Root option will restart your tablet.
Re-root: this will root your device again and should also be used after enabling USB debugging.
Un-root: for removing the root access to your tablet, this option does not require a restart.
As you can see, enabling Android root access need not be a permanent thing, and when combined with some of the most powerful apps available in the Market, root access can turn your Android from a basic web-browsing tablet into something more closely resembling a computer!
Screenshot via http://getandroidstuff.com/rooting-froyo-z4root-app-easy-painless-root/