diff --git a/meta/meta-mediatek/recipes-devtools/flashtool/flashtool/burn.pyo b/meta/meta-mediatek/recipes-devtools/flashtool/flashtool/burn.pyo
new file mode 100644
index 000000000..625f64520
Binary files /dev/null and b/meta/meta-mediatek/recipes-devtools/flashtool/flashtool/burn.pyo differ
diff --git a/src/bsp/lk/app/fitboot/fitboot.c b/src/bsp/lk/app/fitboot/fitboot.c
index 7cfc25478..dab2a52d9 100755
--- a/src/bsp/lk/app/fitboot/fitboot.c
+++ b/src/bsp/lk/app/fitboot/fitboot.c
@@ -72,12 +72,11 @@ struct boot_flag
 	unsigned int usea;
 	unsigned int useb;
 	unsigned int current;
-	unsigned int secver;
 };
 
 extern int errno;
 
-u32 set_currently_boot_flag(int last_flag, u32 current_flag, u32 def_ver,const char *part_name)
+u32 set_currently_boot_flag(int last_flag, u32 current_flag, const char *part_name)
 {
 	int ret = 0;
 	long len = 0;
@@ -107,9 +106,6 @@ u32 set_currently_boot_flag(int last_flag, u32 current_flag, u32 def_ver,const c
 	set_flag.current = current_flag;
 	set_flag.usea = -1;
 	set_flag.useb = -1;
-	if(def_ver>0){
-		set_flag.secver = def_ver;
-	}
 
 	memset(buf, 0, writesize);
 	memcpy(buf, (void*)&set_flag, sizeof(boot_flag));
@@ -122,7 +118,7 @@ u32 set_currently_boot_flag(int last_flag, u32 current_flag, u32 def_ver,const c
 		ret = -1;
 		goto err;
 	}
-	dprintf(CRITICAL, "set flag: lastboot = %d, use A = %d, use B = %d, current = %d secver = %d\n", set_flag.lastboot, set_flag.usea, set_flag.useb, set_flag.current,set_flag.secver);
+	dprintf(CRITICAL, "set flag: lastboot = %d, use A = %d, use B = %d, current = %d\n", set_flag.lastboot, set_flag.usea, set_flag.useb, set_flag.current);
 	if (buf) {
         free(buf);
         buf = NULL;
@@ -136,47 +132,11 @@ err:
 	return ret;
 }
 
-u32 updata_secver(boot_flag set_flag)
-{
-	int ret = 0;
-	long len = 0;
-	u32 writesize = 2048;
-	int index = -1;
-	unsigned long long ptn = 0;
-	unsigned long long size = 0;
-	char *buf;
-	buf = malloc(writesize);
-	memset(buf, 0, writesize);
-	memcpy(buf, (void*)&set_flag, sizeof(boot_flag));
-   /* read partition */
-	struct bdev *nand_MISC = bio_open_by_label("MISC");
-	/* write buf to offset 0, which size is 2048 */
-	len = bio_write(nand_MISC, (char*)buf, 0, (u32)writesize);
-	if (len <=  0) {
-		dprintf(CRITICAL, "nand write fail, return : %d,  error: \n",len, strerror(errno));
-		dprintf(CRITICAL, "buf: %s\n", buf);
-		ret = -1;
-		goto err;
-	}
-	dprintf(CRITICAL, "update set flag: lastboot = %d, use A = %d, use B = %d, current = %d secver = %d\n", set_flag.lastboot, set_flag.usea, set_flag.useb, set_flag.current,set_flag.secver);
-	if (buf) {
-        free(buf);
-        buf = NULL;
-    }
-	return 0;
-err:
-	if (buf) {
-        free(buf);
-        buf = NULL;
-    }
-	return ret;
-}
 u32 check_boot_partition(const char *part_name)
 {
 	int ret = 0;
 	boot_flag flag;
 	u32 boot = 0;
-	u32 defver = 0;
 	
 	struct bdev *nand_MISC = bio_open_by_label("MISC");
 	int len = -1;
@@ -226,13 +186,12 @@ u32 check_boot_partition(const char *part_name)
 	} else {
 		dprintf(CRITICAL, "boot flag is not match, use default boot partition\n");
 		boot = 0;
-		defver = 101001;
 	}
 
 	if ((flag.current != boot) || (flag.usea == UPG_SUCCEED) || (flag.useb == UPG_SUCCEED)) {
 		ret = bio_erase(nand_MISC, 0, 0x20000);  //erase one block
 		printf("bio erase ret %d\n", ret);
-		ret = set_currently_boot_flag(flag.lastboot, boot,defver , part_name);
+		ret = set_currently_boot_flag(flag.lastboot, boot, part_name);
 		if(ret!=0)
 			dprintf(CRITICAL, "set flags fail. LINE: %d\n", __LINE__);
 	}
diff --git a/src/bsp/lk/include/printf.h b/src/bsp/lk/include/printf.h
index 367d3a03d..bae918cdb 100644
--- a/src/bsp/lk/include/printf.h
+++ b/src/bsp/lk/include/printf.h
@@ -29,6 +29,7 @@
 
 __BEGIN_CDECLS
 
+#define DISABLE_DEBUG_OUTPUT 1
 #if !DISABLE_DEBUG_OUTPUT
 #define printf(x...) _printf(x)
 #else
diff --git a/tool/build_otazip.sh b/tool/build_otazip.sh
new file mode 100755
index 000000000..b03191481
--- /dev/null
+++ b/tool/build_otazip.sh
@@ -0,0 +1,141 @@
+#!/bin/bash
+
+set -e
+
+dir=`pwd`
+version=$1
+filepath=$2
+PROJECT_NAME=$3
+PROJECT_BIZID=$4
+
+if [ $# -lt 2 ]
+then
+    	echo "please ./mkzip.sh version filepath"
+    	exit -1
+fi
+
+if [ ! -f $filepath ]
+then
+	echo "not found $filepath"
+	exit -1
+fi
+
+rm -rf ./output/ota
+mkdir -p ./output/ota
+mkdir -p ./output/ota/updatezip/image
+mkdir -p ./output/ota/updatezip/split
+
+dir=$dir/output/ota
+
+unzip $filepath -d ./output/ota/updatezip/image
+filepath_tz="$dir/updatezip/image/tz.img"
+filepath_boot="$dir/updatezip/image/boot.img"
+filepath_rootfs="$dir/updatezip/image/rootfs.ubi"
+
+if [ ! -f "$filepath_tz" ]
+then
+	echo "not found $filepath_tz"
+	exit -1
+fi
+if [ ! -f "$filepath_boot" ]
+then
+	echo "not found $filepath_boot"
+	exit -1
+fi
+if [ ! -f "$filepath_rootfs" ]
+then
+	echo "not found $filepath_rootfs"
+	exit -1
+fi
+
+cd $dir
+rm -rf files
+mkdir files
+echo version=$version >> $dir/files/info
+
+split -b 1M -d $filepath_tz  $dir/updatezip/split/tz.img_
+split -b 1M -d $filepath_boot $dir/updatezip/split/boot.img_
+split -b 1M -d $filepath_rootfs  $dir/updatezip/split/rootfs.ubi_
+
+
+cd $dir
+files_tz=`ls $dir/updatezip/split/tz.img_*`
+files_boot=`ls $dir/updatezip/split/boot.img_*`
+files_rootfs=`ls $dir/updatezip/split/rootfs.ubi_*`
+
+totalfiles_tz=0
+totalfiles_boot=0
+totalfiles_rootfs=0
+
+
+for f in $files_tz
+do
+	(( ++totalfiles_tz ))
+done
+
+for f in $files_boot
+do
+	(( ++totalfiles_boot ))
+done
+
+for f in $files_rootfs
+do
+	(( ++totalfiles_rootfs ))
+done
+
+echo "wait for calculate md5..."
+cd $dir/updatezip/split/
+for i in $(seq 0 `expr $totalfiles_tz - 1`)
+do
+	if [ $i -lt 10 ];then
+		fileindex=0$i
+	else
+		fileindex=$i
+	fi
+
+	md5filename=`md5sum tz.img_$fileindex | awk '{ print $1 }'`
+	md5filename="tz.img-$fileindex-$md5filename"
+	echo "file=$md5filename" >> $dir/files/info
+	mv tz.img_$fileindex $dir/files/$md5filename
+	(( ++i ))
+done
+
+for i in $(seq 0 `expr $totalfiles_boot - 1`)
+do
+	if [ $i -lt 10 ];then
+		fileindex=0$i
+	else
+		fileindex=$i
+	fi
+
+	md5filename=`md5sum boot.img_$fileindex | awk '{ print $1 }'`
+	md5filename="boot.img-$fileindex-$md5filename"
+	echo "file=$md5filename" >> $dir/files/info
+	mv boot.img_$fileindex $dir/files/$md5filename
+	(( ++i ))
+done
+
+for i in $(seq 0 `expr $totalfiles_rootfs - 1`)
+do
+	if [ $i -lt 10 ];then
+		fileindex=0$i
+	else
+		fileindex=$i
+	fi
+
+	md5filename=`md5sum rootfs.ubi_$fileindex | awk '{ print $1 }'`
+	md5filename="rootfs.ubi-$fileindex-$md5filename"
+	echo "file=$md5filename" >> $dir/files/info
+	mv rootfs.ubi_$fileindex $dir/files/$md5filename
+	(( ++i ))
+done
+
+cd $dir
+rm ./updatezip -rf
+mv ./files/info .
+zip -r "Firmware_"$PROJECT_NAME"_OTA_"$version"_"$PROJECT_BIZID".zip" ./*
+rm ./files -rf
+rm info
+cd ../..
+
+echo "work done"