Are you talking about updating applications? If so it can only be done threw the store. If it doesn't work, go into your computer and log into Google Play threw your computer. Try it threw there and see.
neither works. my market is stuck, not updating to google play. i've an infuse SGH-i997r that is compatible with the Play store. but nothing i've found is fixing the problem. and no avaialble ROM's put out by Rogers or Samsung for the phone. only custom ones. tried talking to tech support, and they won't support the android OS just thd hardware. thought that as a slap in the face. when'd that policy change with rogers?