diff --git a/inc/mtp.h b/inc/mtp.h
index 376ddff..2c7db88 100644
--- a/inc/mtp.h
+++ b/inc/mtp.h
@@ -171,6 +171,6 @@ int build_response(mtp_ctx * ctx, uint32_t tx_id, uint16_t type, uint16_t status
 int check_and_send_USB_ZLP(mtp_ctx * ctx , int size);
 int parse_incomming_dataset(mtp_ctx * ctx,void * datain,int size,uint32_t * newhandle, uint32_t parent_handle, uint32_t storage_id);
 
-#define APP_VERSION "v1.6.5"
+#define APP_VERSION "v1.6.6"
 
 #endif
diff --git a/src/usbstring.c b/src/usbstring.c
index 02f88c4..ec5a9ea 100644
--- a/src/usbstring.c
+++ b/src/usbstring.c
@@ -208,12 +208,17 @@ int unicode2charstring(char * str, uint16_t * unicodestr, int maxstrsize)
 	int i,j,ret;
 	int chunksize;
 	char tmpstr[8];
+	unsigned char * byte_access;
+
+	// Use bytes accesses instead of half word accesses to support unaligned addresses on pre ARMv7 CPUs.
+	byte_access = (unsigned char *)unicodestr;
 
 	ret = 0;
 	i = 0;
-	while( *unicodestr )
+	while( byte_access[0] || byte_access[1] )
 	{
-		chunksize = utf8_encode((char*)&tmpstr, *unicodestr++);
+		chunksize = utf8_encode( (char*)&tmpstr, ( ((uint16_t)byte_access[1]) << 8 ) | byte_access[0] );
+		byte_access += 2;
 
 		if(!chunksize)
 		{	// Error -> default character