diff --git a/sdk b/sdk
index 3b4d954..c48f67a 160000
--- a/sdk
+++ b/sdk
@@ -1 +1 @@
-Subproject commit 3b4d954de657294d78ec7c59f8eab37ada9ca028
+Subproject commit c48f67a4d36d4ab2ebe30bff8c00a57f7cf5b47d
diff --git a/usrc/project_configs.h b/usrc/project_configs.h
index 5eee190..6085450 100644
--- a/usrc/project_configs.h
+++ b/usrc/project_configs.h
@@ -1,5 +1,5 @@
 #pragma once
-#define PC_VERSION           401
+#define PC_VERSION           501
 #define PC_MANUFACTURER      "http://www.iflytop.com/"
 #define PC_PROJECT_NAME      "a8000_subboard"
 #define PC_IFLYTOP_ENABLE_OS 1