mobile

So i've bought this unpopular tablet + phone device that has an android version 4.2.2 installed, Jelly bean. Brand name is: Neo. Full name would be: Neo Omnipad 3g. I've rooted it successfully but i kind of wanna have a backup of my system before i do some risky stuffs. I downloaded the Nandroid backup app in my phone and created a backup that is placed on my sd card now but the PROBLEM IS: I don't have a CWM recovery tool. I've tried to use ROM manager but it wont recognize my device as well which means i cant install any CWM Recovery tool that would support my device as well as backups, I also did tried the Quick boot and tried to put my device into Recovery mode but it stucked on the Android with an open body having Exclamation on it. Could somebody help me with this? Are there any other ways that could support my device in terms of having a backup of my current and original ROM or OS in this android? Thanks much!

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