Wiko Cink Peax 2 is distributed by Wiko, a french importer of chinese phones.
It is a very affordable Android smartphone based on a MediaTek MT6589 chipset.
It's main characteristics are :
* an ARM Cortex A7 quad-core processor
* a PowerVR Series 5XTCortex graphics
* 1 Gb RAM
* 4 Gb flash memory
* a microSD connector
* a dual SIM.
This phone come with Jelly Bean 4.1 but, unlike many chinese phones, it doesn't come pre-rooted.
This article explains all the steps needed to root your Wiko Cink Peax 2 under Jelly Bean 4.1 and to install a custom CWM Recovery that will allow you to do ROM backup and restore.
This procedure has been done to be run on a Ubuntu workstation, but it should be easily adapted to any other Linux flavour, and even to a Windows PC. As a pre-requisite, you need to Install Android ADB tools on your Ubuntu box.