diff --git a/devices/t31_lite_zte-k540/general/overlay/etc/wireless/usb b/devices/t31_lite_zte-k540/general/overlay/etc/wireless/usb
deleted file mode 100755
index 99d30e8..0000000
--- a/devices/t31_lite_zte-k540/general/overlay/etc/wireless/usb
+++ /dev/null
@@ -1,12 +0,0 @@
-#!/bin/sh
-
-set_gpio() {
-	[ "$2" -eq 1 ] && gpio set $1 || gpio clear $1
-	sleep 1
-}
-
-if [ "$1" = "atbm603x_wifi_usb" ]; then
-        set_gpio 51 0
-        modprobe atbm603x_wifi_usb
-        exit 0
-fi
diff --git a/devices/t31_lite_zte-k540/general/overlay/usr/share/openipc/customizer.sh b/devices/t31_lite_zte-k540/general/overlay/usr/share/openipc/customizer.sh
index 5d2a869..7fd4266 100644
--- a/devices/t31_lite_zte-k540/general/overlay/usr/share/openipc/customizer.sh
+++ b/devices/t31_lite_zte-k540/general/overlay/usr/share/openipc/customizer.sh
@@ -13,6 +13,7 @@ fw_setenv upgrade 'https://github.com/OpenIPC/builder/releases/download/latest/t
 cli -s .nightMode.enabled true
 cli -s .nightMode.irCutPin1 57
 cli -s .nightMode.irCutPin2 58
+cli -s .nightMode.colorToGray true
 cli -s .nightMode.backlightPin 11
 cli -s .video0.codec h264
 cli -s .audio.speakerPin 64
@@ -20,7 +21,7 @@ cli -s .audio.speakerPin 64
 #
 # Set wlan device and credentials if need
 #
-fw_setenv wlandev atbm603x_wifi_usb
+fw_setenv wlandev atbm603x-t31-zte-k540
 #fw_setenv wlanssid Router
 #fw_setenv wlanpass 12345678
 #