Hey Cedric,
Have you seen this thread at all? viewtopic.php?f=4&t=2944
It may be of help, there’s pictures of an arduino uno with jumper wires etc. How is your hardware setup? Can you upload a pic? I’m using Arduino uno + seeduino BT shield, can send data from my arduino to my android, but nothing returns the other way! I’m stuck also and wondering if it’s faulty hardware or incompatible and we weren’t told…