(extSdCard may be named differently; rungps may also be rungps_pro or rungps_full or rungps_lite, depending on your version).
Normally you *do* have write access to the sd card if you connect your device to a PC (through Explorer) or Mac (through Android File Transfer, Samsung Kies or similar). The sd card is read-only from within the device (for apps), but not if accessed through USB cable. Apps can only access their own app folder, which is why we had to move everything there.
I´ve understood that data will be automatically moved to external SD card if I want this to be done.
But how can I move atlas maps from e.g. my PC on external SD cards as Android still does not permit to write on the SD card. Is there a workaround in place ?