olli991/mib-std2-pq-zr-toolbox ? reverse-engineered prompt

Build me a shell based toolbox for MIB STD2 PQ ZR Technisat and Preh head units that can be copied to an SD card or USB stick and run from the unit. It should install cleanly with an install script, create a clear text menu, and let me browse common actions like checking device info, enabling network or telnet access, dumping files from the unit, restoring backups, and applying customizations from a custom folder.

I want it to be careful and user friendly, so it should always back up original files before changing anything, and make it easy to restore them later. Include support for the Green Engineering Menu workflow, simple status and help screens, and obvious warnings about compatibility and risk.

Please organize it so the main entry point is easy to run from the mounted drive, and make the scripts work in a plain QNX shell style environment. If you need to look up current docs online, do that.