Good day,
i was lucky with my Aventura so far. No that i want to calculate a route to Siena, Italy it crashes always with 37 km remaining. The entire Aventura freezes, only removal of battery helps to restart.
If I am using the original 4GB card it works well.

I have: Aventura 2.5.2 with OS 1.3.59R
I tried to copy all Maps from the original SD to the 16GB Card
I tried Transcend class 2, Sandisk class4

I found somewhere infomation about OS 1.6 solving SDCard issues.
Is it a SD Card issue for sure, which should i by in 16 or 32GB
In the FAQ I only found a list of 8GB cards, i will need 16GB at least.

Thanks for your help.