diff --git a/src/main.c b/src/main.c
index a94777f..32d0247 100644
--- a/src/main.c
+++ b/src/main.c
@@ -781,9 +781,12 @@ int main(int argc, char **argv) {
 				usb_close_device(usb_dev);
 				usb_dev = NULL;
 
-				if ( ret != 0 )
+				if ( ret != -EAGAIN )
 					continue;
 
+				if ( ret != 0 )
+					goto clean;
+
 				if ( dev_flash ) {
 					dev_cold_flash = 0;
 					continue;