diff --git a/PARAM.SFO b/PARAM.SFO
deleted file mode 100644
index 72923dba5c06..000000000000
Binary files a/PARAM.SFO and /dev/null differ
diff --git a/platform/psp/SCsub b/platform/psp/SCsub
index 7c347c7cab1a..8872d2067c59 100644
--- a/platform/psp/SCsub
+++ b/platform/psp/SCsub
@@ -25,7 +25,11 @@ env.Command(
 )
 
 env.Command(
-	"#bin/EBOOT.PBP", "#bin/strip2.elf" ,"pack-pbp bin/EBOOT.PBP PARAM.SFO NULL          NULL NULL NULL          NULL  bin/strip2.elf NULL"
+	"#bin/PARAM.SFO", "", "mksfoex -d MEMSIZE=1 Godot bin/PARAM.SFO"
+)
+
+env.Command(
+	"#bin/EBOOT.PBP", ["#bin/strip2.elf", "#bin/PARAM.SFO"] ,"pack-pbp bin/EBOOT.PBP bin/PARAM.SFO NULL          NULL NULL NULL          NULL  bin/strip2.elf NULL"
 )
 
 
diff --git a/platform/psp/audio_driver_psp.cpp b/platform/psp/audio_driver_psp.cpp
index bbb7fbefa57d..17aed09e15c6 100644
--- a/platform/psp/audio_driver_psp.cpp
+++ b/platform/psp/audio_driver_psp.cpp
@@ -54,63 +54,31 @@ Error AudioDriverPSP::init() {
 
 	samples_in = memnew_arr(int32_t, buffer_size*channels);
 	samples_out = memnew_arr(int16_t, buffer_size*channels);
-
-	// channel_num = sceAudioChReserve(1, PSP_AUDIO_SAMPLE_ALIGN(buffer_size*channels), PSP_AUDIO_FORMAT_MONO);
-	sceAudioOutput2Reserve(buffer_size);
-
-	mutex = Mutex::create();
-	thread = Thread::create(AudioDriverPSP::thread_func, this);
-
+	
+	pspAudioInit();
+	pspAudioSetChannelCallback(0, thread_func, (void*)this);
 
 	return OK;
 };
 
-void AudioDriverPSP::thread_func(void *p_udata) {
-
-	int buffer_index = 0;
-	printf("out\n");
- 	AudioDriverPSP* ad = (AudioDriverPSP*)p_udata;
-
-	int sample_count = ad->buffer_size ;
-	uint64_t usdelay = (ad->buffer_size / float(ad->mix_rate)) * 1000000;
-
- 	while (!ad->exit_thread) {
-
-
- 		if (ad->exit_thread)
- 			break;
-#ifndef PPSSPP
-		while(sceAudioWaitInputEnd()) {
-			OS::get_singleton()->delay_usec(usdelay);
-		}
-#endif
-		if (ad->active) {
-			ad->lock();
-
-			ad->audio_server_process(ad->buffer_size, ad->samples_in);
-
-			ad->unlock();
-
-			for(int i = 0; i < sample_count*2; ++i) {
-				ad->samples_out[i] = ad->samples_in[i] >> 16;
-			}
-
-
-		} else
-		{
-			for (int i = 0; i < sample_count*2; i++) {
-
-				ad->samples_out[i] = 0;
-			}
-		}
-// #ifdef PPSSPP
-// 		OS::get_singleton()->delay_usec(usdelay);
-// #endif
-		sceAudioOutput2OutputBlocking(0x8000, ad->samples_out);
+void AudioDriverPSP::thread_func(void *udata, unsigned int numSamples, void *userdata)
+{
+	AudioDriverPSP* ad = (AudioDriverPSP*)userdata;
+	if (ad->active) {
+		ad->lock();
+		ad->audio_server_process(numSamples, ad->samples_in);
+		ad->unlock();
+		short * _buf = (short *) udata;
+		unsigned int count;
+		for (count = 0; count < numSamples * 2; count++)
+	    		*(_buf + count) = (ad->samples_in[count] >> 16) * 0.9;
+	} else
+	{
+		short * _buf = (short *) udata;
+		unsigned int count;
+		for (count = 0; count < numSamples * 2; count++)
+	    		*(_buf + count) = 0;
 	}
-
-
-	ad->thread_exited=true;
 };
 
 void AudioDriverPSP::start() {
diff --git a/platform/psp/audio_driver_psp.h b/platform/psp/audio_driver_psp.h
index d1387c0def7c..5937cba4e8d5 100644
--- a/platform/psp/audio_driver_psp.h
+++ b/platform/psp/audio_driver_psp.h
@@ -47,7 +47,7 @@ class AudioDriverPSP : public AudioDriverSW {
 	int16_t* samples_out;
 	int id;
 
-	static void thread_func(void *p_udata);
+	static void thread_func(void *udata, unsigned int numSamples, void *userdata);
 
 
 	int buffer_size;
diff --git a/platform/psp/os_psp.cpp b/platform/psp/os_psp.cpp
index 294fed30d414..0c2e3f0ad3ad 100644
--- a/platform/psp/os_psp.cpp
+++ b/platform/psp/os_psp.cpp
@@ -334,9 +334,6 @@ void OS_PSP::process_keys() {
 
 	input->joy_axis(0, 0, 0, lx);
 	input->joy_axis(0, 0, 1, ly);
-
-	if(pad.Buttons & PSP_CTRL_HOME)
-		sceKernelExitGame();
 }
 
 void OS_PSP::delete_main_loop() {
@@ -371,6 +368,32 @@ void OS_PSP::set_cursor_shape(CursorShape p_shape) {
 void OS_PSP::set_custom_mouse_cursor(const RES &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot) {
 }
 
+// Standard callback functions
+/* Exit callback */
+int exit_callback(int arg1, int arg2, void *common) {
+	sceKernelExitGame();
+	return 0;
+}
+
+/* Callback thread */
+int CallbackThread(SceSize args, void *argp) {
+	int cbid;
+	cbid = sceKernelCreateCallback("Exit Callback", exit_callback, NULL);
+	sceKernelRegisterExitCallback(cbid);
+	sceKernelSleepThreadCB();
+	return 0;
+}
+
+/* Sets up the callback thread and returns its thread id */
+int SetupCallbacks(void) {
+	int thid = 0;
+	thid = sceKernelCreateThread("update_thread", CallbackThread, 0x11, 0xFA0, 0, 0);
+	if(thid >= 0) {
+		sceKernelStartThread(thid, 0, 0);
+	}
+	return thid;
+} 
+
 void OS_PSP::run() {
 
 	force_quit = false;
@@ -379,6 +402,7 @@ void OS_PSP::run() {
 		return;
 
 	main_loop->init();
+	SetupCallbacks();
 
 	while (!force_quit) {