Which version of the Kobo Aura Edition 2 do you have? There is a version 1 and version 2. If the 7th character of the serial number is a 2 you have version 2 hardware. Due to a change in the CPU between v1 and V2 software, the image from a v1 can not be used on a v2 and vice versa.
I've sent a PM as well.
And remember patience is a virtue!