First of all don't install any third party app on this table as the memory on them are very small.............Second switch OFF the table insert the SD Card in the slot switch on the table and it will learn on its own, if you still have your updates subscription valid than first back up your all software's than delete BMW Software and start to update BMW software it should load automatically on your SD Card once updates are finished you will get the message that your software was installed in SD Card Successfully...........
(But, make sure you have backed up your tool before deleting any software)
Good Luck....