I suspect that after a couple years that a tablet is discontinued from production and the OS no longer has current security certificates for an outdated browser,the quantity and quality of updates start going down the toilet, and exist basically as restore software for a few more years for broken units without back up software, and it is time to upgrade to a newer platform. Many folk with DS708s out of update period if they allowed them to connect to internet would find they mysteriously develop issues.
IMO for longer tablet for better long term stability, if you can live without all the past car History would be no less than 6 weeks BEFORE your update period is over, with unit powered off eject the ext SD card and do a Factory Restore and re download all the car Apps software again one App at a time, starting from largest to smallest sized car file App.If you live in the USA though you might not need Puegeot, Renault , and Chinese car makes typically not sold in the USA Market. After you are done, everything should now fit on the 32 gb internal drive and Tablet should work in a much quicker non fragmented fashion. Make a back up of the Scan Folder , From here on out do not perform any more updating to your tablet, especially BMW, So called Software Optimizing updates, or afterwards to a higher numerical OS or LIB version # after or it will reduce chance of software backup you created earlier will work should you ever need it. Never ever do a Factory Reset if you are out of update period thinking you can just copy and paste your Scan Folder backup back into ES Explorer and think that will workout well for you . Turn the tablet WIFI off a full month before your update period expires and use your laptop for internet. Take photos of your reports and send out by phone