At first many thanks to wojpen and djeman - You've done an excellent job!
It's to inform you all that following wojpens instructions in the post #1 I installed the software without hassle on my Samasung Galaxy Xcover II (S7710). I removed carefully all the remnants of a previous installation (iGO 126.96.36.1993969) and copied the contents of iGO folder to the root of extSdCard, installed apk. Then added a Here 2015Q2 map of Estonia and all went smoothly.
Attached an image of simulated navigation.
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Greetings from Estonia,