diff --git a/rootdir/etc/init.mt6785.usb.rc b/rootdir/etc/init.mt6785.usb.rc
index 5cd1104..5746891 100644
--- a/rootdir/etc/init.mt6785.usb.rc
+++ b/rootdir/etc/init.mt6785.usb.rc
@@ -35,6 +35,73 @@ on post-fs
     mount functionfs mtp /dev/usb-ffs/mtp rmode=0770,fmode=0660,uid=1024,gid=1024,no_disconnect=1
     mount functionfs ptp /dev/usb-ffs/ptp rmode=0770,fmode=0660,uid=1024,gid=1024,no_disconnect=1
 
+
+    # chown file/folder permission
+    chown system system /config/usb_gadget/
+    chown system system /config/usb_gadget/g1
+    chown system system /config/usb_gadget/g1/UDC
+    chown system system /config/usb_gadget/g1/bDeviceClass
+    chown system system /config/usb_gadget/g1/bDeviceProtocol
+    chown system system /config/usb_gadget/g1/bDeviceSubClass
+    chown system system /config/usb_gadget/g1/bMaxPacketSize0
+    chown system system /config/usb_gadget/g1/bcdDevice
+    chown system system /config/usb_gadget/g1/bcdUSB
+    chown system system /config/usb_gadget/g1/configs
+    chown system system /config/usb_gadget/g1/configs/b.1
+    chown system system /config/usb_gadget/g1/configs/b.1/MaxPower
+    chown system system /config/usb_gadget/g1/configs/b.1/bmAttributes
+    chown system system /config/usb_gadget/g1/configs/b.1/strings
+    chown system system /config/usb_gadget/g1/functions
+    chown system system /config/usb_gadget/g1/functions/accessory.gs2
+    chown system system /config/usb_gadget/g1/functions/audio_source.gs3
+    chown system system /config/usb_gadget/g1/functions/dm.gs7
+    chown system system /config/usb_gadget/g1/functions/ffs.adb
+    chown system system /config/usb_gadget/g1/functions/ffs.mtp
+    chown system system /config/usb_gadget/g1/functions/ffs.ptp
+    chown system system /config/usb_gadget/g1/functions/midi.gs5
+    chown system system /config/usb_gadget/g1/functions/midi.gs5/buflen
+    chown system system /config/usb_gadget/g1/functions/midi.gs5/id
+    chown system system /config/usb_gadget/g1/functions/midi.gs5/in_ports
+    chown system system /config/usb_gadget/g1/functions/midi.gs5/index
+    chown system system /config/usb_gadget/g1/functions/midi.gs5/out_ports
+    chown system system /config/usb_gadget/g1/functions/midi.gs5/qlen
+    chown system system /config/usb_gadget/g1/functions/mtp.gs0
+    chown system system /config/usb_gadget/g1/functions/mtp.gs0/os_desc
+    chown system system /config/usb_gadget/g1/functions/mtp.gs0/os_desc/interface.MTP
+    chown system system /config/usb_gadget/g1/functions/mtp.gs0/os_desc/interface.MTP/compatible_id
+    chown system system /config/usb_gadget/g1/functions/mtp.gs0/os_desc/interface.MTP/sub_compatible_id
+    chown system system /config/usb_gadget/g1/functions/ptp.gs1
+    chown system system /config/usb_gadget/g1/functions/ptp.gs1/os_desc
+    chown system system /config/usb_gadget/g1/functions/ptp.gs1/os_desc/interface.MTP
+    chown system system /config/usb_gadget/g1/functions/ptp.gs1/os_desc/interface.MTP/compatible_id
+    chown system system /config/usb_gadget/g1/functions/ptp.gs1/os_desc/interface.MTP/sub_compatible_id
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/class
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/dev_addr
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/host_addr
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/ifname
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/os_desc
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/os_desc/interface.rndis
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/os_desc/interface.rndis/compatible_id
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/os_desc/interface.rndis/sub_compatible_id
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/protocol
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/qmult
+    chown system system /config/usb_gadget/g1/functions/rndis.gs4/subclass
+    chown system system /config/usb_gadget/g1/idProduct
+    chown system system /config/usb_gadget/g1/idVendor
+    chown system system /config/usb_gadget/g1/max_speed
+    chown system system /config/usb_gadget/g1/os_desc
+    chown system system /config/usb_gadget/g1/os_desc/b.1
+    chown system system /config/usb_gadget/g1/os_desc/b_vendor_code
+    chown system system /config/usb_gadget/g1/os_desc/qw_sign
+    chown system system /config/usb_gadget/g1/os_desc/use
+    chown system system /config/usb_gadget/g1/strings
+    chown system system /config/usb_gadget/g1/strings/0x409
+    chown system system /config/usb_gadget/g1/strings/0x409/manufacturer
+    chown system system /config/usb_gadget/g1/strings/0x409/product
+    chown system system /config/usb_gadget/g1/strings/0x409/serialnumber
+    setprop vendor.usb.functions.ready 1
+
 on boot
     setprop sys.usb.configfs 2
     setprop sys.usb.controller "musb-hdrc"