[Q] How to root and install new Android?

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http://forum.xda-developers.com – Hi all. I just got android tablet from unknown manufacturer. About part in setting shows: Model Number: N10 ICS MCU Version: 1.70.4 Kernel version: Build number: v01.11_nv_ics Android version: 4.0.3 So, I want to root the device and install Jelly Bean, but have no idea where to start. I want to backup original system as well in any case of failure. If somebody can help me with instructions it will be great. I have experience only with rooting my HTC ONE X. (HowTos)