BusyBox Pro is a paid version of the very famous and convenient http://www.androeed.ru/files/busybox.html>installer BusyBox.
Fastest and most reliable and installer BusyBox! Supports devices on ARM architecture and Intel-based. Mentioned in the XDA-Developers forum "XDA Developers' Android Hacker's Toolkit: The Complete Guide to Rooting, ROMs and Theming." Also, this utility won the "Best Software Utility for Android" award. Also, this is the only BusyBox installer, for which you do not need an Inteet connection.
To update the application, install the new version of the application over (without deleting) the old one.
This update will only be possible if the previous version of the application is downloaded from us. Otherwise, there will be a signature conflict and you will see the message "Application not installed".
For what "Signatures" are and what they are for, read here.