download CMP-738a-update-2011-01-26-rls4.img. plug in your tab to the pc using the usb cord rename the file above to update.img move it to the root of the internal memory once you unplug the usb it will ask if you want to do the update say yes and it'll do its thing. it'll reboot then start showing info about formatting and installing then it'll go back to the desktop then you atta be able to see the market app. rls5 i don't believe you can do that with you have to go a different route so make sure its rls4 once your up and going then you might have to do the Market Fix its simple and defiantly worth it.