I have a Galaxy 4.42 and want to upgrade to marshmello

[troopersquirrelmom]

Want to direct my information to my SD Card and I found I have to upgrade to Marshmello I have 4.42 Galaxy

 

[rgd1101]

MERGED QUESTION
Question from troopersquirrelmom : "how do I upgrade to marshmello"

How do I upgrade to a marshmello so that I can use an SD card

 

[rgd1101]

And what exact model of this tablets do you have?