Remember the hybrid Jelly bean firmware we mentioned for the Samsung Galaxy Tab 7.7? The developer behind it has ported it for the Galaxy Tab Plus. It works on the both P6200 and P6210 tablets.
Keep in mind that this jelly bean ROM is still a work-in-progress, so there might some annoying bugs here and there. You can install it over a stock ROM but you might loose some data. Find download links and ‘how to install’ instructions here.