diff --git a/projects/gk7205v200_ultimate_baresip/br-ext-chip-goke/configs/gk7205v200_ultimate_baresip_defconfig b/projects/gk7205v200_ultimate_baresip/br-ext-chip-goke/configs/gk7205v200_ultimate_baresip_defconfig
index e72f909..74852fe 100644
--- a/projects/gk7205v200_ultimate_baresip/br-ext-chip-goke/configs/gk7205v200_ultimate_baresip_defconfig
+++ b/projects/gk7205v200_ultimate_baresip/br-ext-chip-goke/configs/gk7205v200_ultimate_baresip_defconfig
@@ -107,7 +107,7 @@ BR2_PACKAGE_WIREGUARD_LINUX_COMPAT=y
 BR2_PACKAGE_WIREGUARD_TOOLS=y
 
 # IPTABLES
-BR2_PACKAGE_IPTABLES is not set
+# BR2_PACKAGE_IPTABLES is not set
 
 # MQTT
 BR2_PACKAGE_MOSQUITTO=y
diff --git a/projects/gk7205v200_ultimate_baresip/general/overlay/etc/init.d/S35uart b/projects/gk7205v200_ultimate_baresip/general/overlay/etc/init.d/S35uart
new file mode 100755
index 0000000..23e931d
--- /dev/null
+++ b/projects/gk7205v200_ultimate_baresip/general/overlay/etc/init.d/S35uart
@@ -0,0 +1,4 @@
+#!/bin/sh
+
+devmem 0x112c0070 32 0x2
+devmem 0x112c0074 32 0x2