ROS-Android tutorials not working on device with MTK6575 processor [closed]

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I built the ros-android tutorials, and ran them correctly on a Samsung with Android 4.2, and a Motorola with Android 2.2. But when trying to run the examples on other device (Primux Alpha) with Android 4.1 and a processor MTK6575, the apps stop after clicking "ok" when I try to connect to ros core (in the same device, and in a PC).

This is the log when I execute the android_tutorial_camera:

04-04 09:38:37.663: I/SurfaceTextureClient(1424): [0x532a62c8] frames:6, duration:3.004000, fps:1.997202 04-04 09:38:38.710: V/Provider/Setting(1424): from settings cache , name = sound_effects_enabled value = 0 04-04 09:38:38.741: D/ActivityThread(1424): ACT-AM_ON_PAUSE_CALLED ActivityRecord{4214b3b8 token=android.os.BinderProxy@4214aa68 {org.ros.android.android_tutorial_camera/org.ros.android.MasterChooser}} 04-04 09:38:38.920: D/ActivityThread(1424): ACT-PAUSE_ACTIVITY_FINISHING handled : 0 / android.os.BinderProxy@4214aa68 04-04 09:38:38.927: D/OpenGLRenderer(1424): Flushing caches (mode 0) 04-04 09:38:38.928: V/InputMethodManager(1424): focusOut: android.widget.EditText@4214f5e0 mServedView=android.widget.EditText@4214f5e0 winFocus=false 04-04 09:38:38.940: D/OpenGLRenderer(1424): Flushing caches (mode 0) 04-04 09:38:39.009: I/SurfaceTextureClient(1424): [void android::SurfaceTextureClient::init()] debug.stc.fps: 3000 ms 04-04 09:38:39.160: W/IInputConnectionWrapper(1424): showStatusIcon on inactive InputConnection 04-04 09:38:39.455: D/OpenGLRenderer(1424): Flushing caches (mode 1) 04-04 09:38:39.474: D/OpenGLRenderer(1424): Flushing caches (mode 0) 04-04 09:38:39.477: D/ActivityThread(1424): ACT-DESTROY_ACTIVITY handled : 1 / android.os.BinderProxy@4214aa68

Could anybody help me?