No, but I've done some research that may help you out.

Getting into the Aura is tricky to do without causing cosmetic damage, but can be done without causing structural damage. Once the back cover has been removed, the internal microSD card is easy to access.

The SD card uses a standard partition table (MBR scheme, though presumably it uses a different boot strap), so modifications can be done using the standard partitioning tools for Linux, Macintosh, and Windows.

There are two ext4 partitions (root and recovery) that contain a copy of the systems' software. There is a third FAT32 partition that is user accessible.

About 10 MB of space is unclaimed in the partition map. This may be used by the system. I don't know.

I'm guessing that you can do a raw copy from the Aura's low capacity card to a higher capacity card (e.g. using dd) then using a partitioning tool to enlarge the FAT32 partition. Just don't overwrite the 10 MB of unclaimed space at the start of the media to be safe.

EDIT: incidentally, it uses the same firmware as the Glo so everything should work in the same way.