--- a/configs/mt7623a_unielec_u7623_02_defconfig
+++ b/configs/mt7623a_unielec_u7623_02_defconfig
@@ -52,3 +52,12 @@ CONFIG_TIMER=y
 CONFIG_MTK_TIMER=y
 CONFIG_WDT_MTK=y
 CONFIG_LZMA=y
+CONFIG_CMD_BOOTZ=y
+CONFIG_OF_LIBFDT_OVERLAY=y
+#enables savenenv-command
+CONFIG_ENV_IS_IN_FAT=y
+CONFIG_ENV_FAT_INTERFACE="mmc"
+CONFIG_ENV_FAT_DEVICE_AND_PART="0:2"
+CONFIG_ENV_FAT_FILE="uboot.env"
+CONFIG_CMD_ASKENV=y
+CONFIG_CMD_SETEXPR=y