diff --git a/source/arm11/open_agb_firm.c b/source/arm11/open_agb_firm.c
index a5cde89..a47a60f 100644
--- a/source/arm11/open_agb_firm.c
+++ b/source/arm11/open_agb_firm.c
@@ -147,9 +147,13 @@ Result dump_rom( u32 size )
 	u32 len;
 	for( u8 *p=ROM_LOC; size > 0; size-=len, p+=len )
 	{
-		res = fWrite( file, p, 256, &len );
+		res = fWrite( file, p, 512, &len );
 		if( res != RES_OK )
 			break;
+
+		res = fSync( file );
+		if( res != RES_OK)
+			break;
 	}
 	fClose( file );