--- a/fw_env.c
+++ b/fw_env.c
@@ -375,12 +375,14 @@ int fw_setenv (int argc, char *argv[])
 		/*
 		 * Ethernet Address and serial# can be set only once
 		 */
+#if 0
 		if ((strcmp (name, "ethaddr") == 0) ||
 			(strcmp (name, "serial#") == 0)) {
 			fprintf (stderr, "Can't overwrite \"%s\"\n", name);
 			errno = EROFS;
 			return -1;
 		}
+#endif
 
 		if (*++nxt == '\0') {
 			*env = '\0';