diff --git a/src/common.h b/src/common.h
index 7e100cd..2920bba 100644
--- a/src/common.h
+++ b/src/common.h
@@ -87,7 +87,7 @@ typedef libusb_device_handle *usb_device_handle_t;
 
 extern void* pongo_usb_callback(void* arg);
 usb_ret_t USBControlTransfer(usb_device_handle_t handle, uint8_t bmRequestType, uint8_t bRequest, uint16_t wValue, uint16_t wIndex, uint32_t wLength, void *data, uint32_t *wLenDone);
-usb_ret_t USBBulkUpload(usb_device_handle_t handle, void *data, uint32_t len);
+usb_ret_t USBBulkUpload(usb_device_handle_t handle, void *data, int len);
 const char *usb_strerror(usb_ret_t err);
 int wait_for_pongo();
 int issue_pongo_command();
diff --git a/src/devhelper.c b/src/devhelper.c
index 962f902..8c123a4 100644
--- a/src/devhelper.c
+++ b/src/devhelper.c
@@ -230,7 +230,7 @@ int enter_recovery_cmd(const char* udid) {
 
 int reboot_cmd(const char* udid) {
 	idevice_t device = NULL;
-	lockdownd_client_t lockdown = NULL;
+	lockdownd_client_t __unused lockdown = NULL;
 	if (idevice_new(&device, udid) != IDEVICE_E_SUCCESS) {
 		LOG(LOG_ERROR, "Could not connect to device");
 		return -1;
diff --git a/src/dfuhelper.c b/src/dfuhelper.c
index f5959db..4bf6ad2 100644
--- a/src/dfuhelper.c
+++ b/src/dfuhelper.c
@@ -143,7 +143,7 @@ void* connected_dfu_mode(struct irecv_device_info* info) {
 	return NULL;
 }
 
-void device_event_cb(const usbmuxd_event_t *event, void *userdata) {
+void device_event_cb(const usbmuxd_event_t *event, void* __unused userdata) {
 	if (event->device.conn_type != CONNECTION_TYPE_USB) return;
 	switch (event->event) {
 	case UE_DEVICE_ADD:
@@ -156,7 +156,7 @@ void device_event_cb(const usbmuxd_event_t *event, void *userdata) {
 	}
 }
 
-void irecv_device_event_cb(const irecv_device_event_t *event, void *userdata) {
+void irecv_device_event_cb(const irecv_device_event_t *event, void* __unused userdata) {
 	pthread_t recovery_thread, dfu_thread;
 	
 	switch(event->type) {
@@ -177,9 +177,7 @@ void irecv_device_event_cb(const irecv_device_event_t *event, void *userdata) {
 	}
 }
 
-void *dfuhelper(void *ptr) {
-	// idevice_set_debug_level(1);
-	// irecv_set_debug_level(1);
+void *dfuhelper(void* __unused ptr) {
 	subscribe_cmd(device_event_cb, irecv_device_event_cb);
 	while (spin) {
 		sleep(1);
diff --git a/src/main.c b/src/main.c
index 5b609d2..05c0a82 100644
--- a/src/main.c
+++ b/src/main.c
@@ -400,7 +400,7 @@ int main(int argc, char *argv[])
 pongo:
 	spin = true;
 	if (do_pongo_sleep)
-		sleep(2);
+		sleep(1);
 	else
 		LOG(LOG_INFO, "Waiting for PongoOS devices...");
 	wait_for_pongo();
diff --git a/src/pongo_usb.c b/src/pongo_usb.c
index fe819ae..d52949c 100644
--- a/src/pongo_usb.c
+++ b/src/pongo_usb.c
@@ -46,8 +46,6 @@
 #define CMD_LEN_MAX         512
 #define UPLOADSZ_MAX        (1024 * 1024 * 128)
 
-static uint8_t gBlockIO = 1;
-
 typedef struct stuff stuff_t;
 
 static void io_start(stuff_t *stuff);
@@ -67,7 +65,7 @@ usb_ret_t USBControlTransfer(usb_device_handle_t handle, uint8_t bmRequestType,
     return USB_RET_SUCCESS;
 }
 
-usb_ret_t USBBulkUpload(usb_device_handle_t handle, void *data, uint32_t len)
+usb_ret_t USBBulkUpload(usb_device_handle_t handle, void *data, int len)
 {
     static uint32_t maxLen = 0;
     int transferred = 0;
@@ -109,7 +107,7 @@ usb_ret_t USBBulkUpload(usb_device_handle_t handle, void *data, uint32_t len)
         }
     }
     // If we get here, we have to chunk our data
-    for(uint32_t done = transferred; done < len; )
+    for(int done = transferred; done < len; )
     {
         uint32_t chunk = len - done;
         if(chunk > maxLen) chunk = maxLen;
@@ -130,7 +128,7 @@ struct stuff
     usb_device_handle_t handle;
 };
 
-static int FoundDevice(libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event, void *arg)
+static int FoundDevice(libusb_context __unused *ctx, libusb_device *dev, libusb_hotplug_event __unused event, void *arg)
 {
     LOG(LOG_VERBOSE, "PongoOS USB Device connected\n");
     stuff_t *stuff = arg;
@@ -178,7 +176,7 @@ static int FoundDevice(libusb_context *ctx, libusb_device *dev, libusb_hotplug_e
     return LIBUSB_SUCCESS;
 }
 
-static int LostDevice(libusb_context *ctx, libusb_device *dev, libusb_hotplug_event event, void *arg)
+static int LostDevice(libusb_context __unused *ctx, libusb_device *dev, libusb_hotplug_event __unused event, void *arg)
 {
     LOG(LOG_VERBOSE, "PongoOS USB Device disconnected");
     stuff_t *stuff = arg;
@@ -239,7 +237,7 @@ int wait_for_pongo(void)
         return -1;
     }
 
-    for(size_t i = 0; i < sz; ++i)
+    for(ssize_t i = 0; i < sz; ++i)
     {
         struct libusb_device_descriptor desc = {};
         r = libusb_get_device_descriptor(list[i], &desc);
@@ -254,7 +252,7 @@ int wait_for_pongo(void)
             continue;
         }
         r = FoundDevice(NULL, list[i], LIBUSB_HOTPLUG_EVENT_DEVICE_ARRIVED, &stuff);
-        for(size_t j = i + 1; j < sz; ++j)
+        for(ssize_t j = i + 1; j < sz; ++j)
         {
             libusb_unref_device(list[j]);
         }