here is the Android 4.2 stock firmware for NEO X7mini:
http://www.mediafire.com/download/9ad3qytajow6ai0/2013-08-22_box-x7mini-6210-720.rar
password: geekbuying.com
Stock firmware, without root.
Firmware flash tool is here:
http://www.mediafire.com/download/cmj5b4222p7cbm7/RKBatchTool_v1.7.rar
Please notice there is no OTG port on MINIX NEO X7mini, so you should use the USB port to the upgrade, the correct usb port you should use is the following one:
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