Yup, you need to reinstall the os,put the new card inside the tablet and put it back together, download the 2files for the os and put them on a spare Card,(details of this can be found on the os threads, flanfingers funnycomb is a good os) pop it in the slot on the bottom and turn it on, should show you it updating, when done take the card out the bottom slot or it will try and update every time you turn it on! hth