* HELP * How To Update SM-T210r (Rooted + TWRP) from 4.1.2 to 4.4.2 +

Could somebody please post instructions, or info on how I can update my rooted SM-T210r currently running 4.1.2 to 4.4.2 or maybe even something newer . . I would like to do this without losing Root, TWRP, or any of my data, if that is in any way possible . . OTA methods would be prefered, Thanks.

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