Yes unfortunately the Android download manager is not up to the task. We been using the device download manager (its not actually DMD2 that downloads anything) but the system is proving to be very unreliable so we will make our own download manager from scratch to solve this and other issues that user been having.

Just an idea: May I can download the Northern Germany & Italy Map via Windows PC directly to a MicroSD and then C&P it to the specific folder of DMD2 on my Carpe Iter? So I can avoid the Android Download Manager..