diff --git a/usb-loader/mch_flasher.c b/usb-loader/mch_flasher.c
index f640ceafa8d74bcb145c090e2b1d0230bae29281..3821c7216297a08c08297bee51c8bae323943f9e 100644
--- a/usb-loader/mch_flasher.c
+++ b/usb-loader/mch_flasher.c
@@ -435,7 +435,8 @@ main(int argc, char *argv[])
 	fprintf(stderr,"Initializing DataFlash...\n\n");
 	dataflash_init(board_rev);
 
-//	dataflash_erase_all();
+	fprintf(stderr,"Erasing DataFlash...\n\n");
+	dataflash_erase_all();
 	
 	fprintf(stderr,"Programming DataFlash...\n");
 	dataflash_program(argv[1]);