Thanks for your help.

I've done as instructed, but same error. Then I tried with #2 apk, and got:

Missing or incomplete folder:
/storage/4E02-B126/iGO_World/license.zip:/storage/4E02-B126/iGO_World license.zip (Permission denied)

Actually, there is no license file there.

Then I tried to copy base folder and #2 apk to internal memory... it worked . But I want to have maps on SD card, is it possible to have content folder on SD card? I tried to move it but then I've got "global_cfg missing" error ??