Safely Unmount the external SD card and remove it . In a little while with an internet connection , you will get a notice of an update for BMW, etc and just re-download it to the tablet. Don't have the SD card in the tablet if you are updating.

  From what I understand is once the system is updated to a higher numeric level than when the Scan Folder was made at an earlier time when the system version level was at a lower numeric number , then the backup scan folder will no longer work. I did my back up of the scan folder to a 32 gb USB thumb drive a couple weeks before my updates expired  , and it took a good 6 hours of time , and I wrapped a large block of blue ice in a towel to keep the tablet cool against it.

 Autel seems to believe that making the forum very hard to use and providing little or no support for it's products will force it's customers to spend more money closer to desired suggested retail  for the product to be able to get support from the Retailers that are willing to provide support after the sale.

  As far as backing up the scan folder Autel did some sort of System changes that after your free update period is over  the scan folder backups that were done earlier, when you had an older system version (Lower numeric system  #. Newer system versions are often not backwards compatible with older system backup.Your Tablet after free update period will deny you authorization to access older backup software you try to install if you ever had to reinstall backup software! Idea being if your software gets damaged it forces many to buy a update or replace the tablet.