diff --git a/Kconfig b/Kconfig
index f7f493e..6b551f7 100644
--- a/Kconfig
+++ b/Kconfig
@@ -69,7 +69,6 @@
 config DISTRO_DEFAULTS
 	bool "Select defaults suitable for booting general purpose Linux distributions"
 	imply USE_BOOTCOMMAND
-	select CMD_BOOTZ if ARM && !ARM64
 	select CMD_DHCP if CMD_NET
 	select CMD_PING if CMD_NET
 	select CMD_ENV_EXISTS
diff --git a/cmd/Kconfig b/cmd/Kconfig
index 2517454..19d7d67 100644
--- a/cmd/Kconfig
+++ b/cmd/Kconfig
@@ -271,7 +271,7 @@
 
 config CMD_GO
 	bool "go"
-	default y
+	default n
 	help
 	  Start an application at a given address.
 
diff --git a/configs/g12b_newman_bx_zircon_defconfig b/configs/g12b_newman_bx_zircon_defconfig
index 5df275e..b780416 100644
--- a/configs/g12b_newman_bx_zircon_defconfig
+++ b/configs/g12b_newman_bx_zircon_defconfig
@@ -225,3 +225,4 @@
 CONFIG_NET=n
 CONFIG_AML_GPT_SYNC_ENTIRE_ENTRY=y
 CONFIG_OPTEE_RAW_PARTITION_IO=y
+CONFIG_CMD_BOOTZ=n
diff --git a/include/configs/g12b_newman_bx.h b/include/configs/g12b_newman_bx.h
index aba1267..535c9f3 100755
--- a/include/configs/g12b_newman_bx.h
+++ b/include/configs/g12b_newman_bx.h
@@ -90,9 +90,7 @@
 	"fb_addr=0x76800000\0" \
 	"fb_width=800\0" \
 	"fb_height=1280\0" \
-	"usb_burning=update 1000\0" \
 	"fdt_high=0x20000000\0" \
-	"try_auto_burn=update 700 750;\0" \
 	"sdcburncfg=aml_sdc_burn.ini\0" \
 	"sdc_burning=sdc_burn ${sdcburncfg}\0" \
 	"wipe_data=successful\0" \
@@ -155,8 +153,6 @@
 		"fi;" \
 		"\0" \
 	"update="\
-		/*first usb burning, second sdc_burn, third ext-sd autoscr/recovery, last udisk autoscr/recovery*/\
-		"run usb_burning; "\
 		"run recovery_from_flash;"\
 		"\0"\
 	"recovery_from_flash="\