I successfully updated to Map Bundle 5, version 1120 downloaded from the Volkswagen site following the instructions in the above mentioned Ateca post. The maps take up about half the original space so probably are not as extensive in coverage. Nonetheless, my short term needs are the UK and possibly France, Belgium.
I didn't have a spare SD card but I have ordered one. I backed up the original card by copying the file structure. However I used Easus Todo Backup 11.5 Free to do a sector by sector backup in addition. I am hoping this copies all the card hidden information as well.
When the new card arrives:
- I will try is Easus Partition Master 13.0 which has a "clone" facility. I will use it to clone the current SD card (1120) and see if that works.
- I will try formatting the new card, sector backing up the current one (1120) and restoring that sector backup onto the new one to see if that works.
Notes:
The bundle is version 1120. I think this might be a year out of date though even though it is the latest.
Backup is free but Partition Master is a limited time use.