Trying to fix MTP

BoardConfig.mk

@@ -59,7 +59,9 @@ TARGET_USERIMAGES_USE_F2FS := true
 BOARD_SUPPRESS_SECURE_ERASE := true
 
 # TWRP Configuration
-TW_THEME := portrait_hdpi
+TW_THEME          := portrait_hdpi
+TW_DEVICE_VERSION := 1_nullcode
+TW_MTP_DEVICE     := "/dev/mtp_usb"
 
 TARGET_RECOVERY_PIXEL_FORMAT := "ABGR_8888"
 TARGET_SCREEN_WIDTH   := 720

recovery/root/fstab.sc8830

@@ -0,0 +1,20 @@
+# Android fstab file.
+# PATH : android/device/sprd/scx35l/emmc/fstab_dt_otg.sc8830
+# The filesystem that contains the filesystem checker binary (typically /system) cannot
+# specify MF_CHECK, and must come before any filesystems that do specify MF_CHECK
+# <src>                                         <mnt_point>  <type>  <mnt_flags and options>             <fs_mgr_flags>
+
+/dev/block/platform/sdio_emmc/by-name/SYSTEM   /system      ext4 ro,errors=panic                                                                 wait
+/dev/block/platform/sdio_emmc/by-name/userdata /data        ext4 nosuid,nodev,noatime,noauto_da_alloc,discard,journal_async_commit,errors=panic  wait,check,encryptable=footer
+/dev/block/platform/sdio_emmc/by-name/CACHE    /cache       ext4 nosuid,nodev,noatime,noauto_da_alloc,discard,journal_async_commit,errors=panic  wait,check
+/dev/block/platform/sdio_emmc/by-name/efs      /efs         ext4 nosuid,nodev,noatime,noauto_da_alloc,discard,journal_async_commit,errors=panic  wait,check
+/dev/block/platform/sdio_emmc/by-name/prodnv   /productinfo ext4 nosuid,nodev,noatime,noauto_da_alloc,discard,journal_async_commit,errors=panic  wait,check
+
+# VOLD
+/devices/sdio_sd/mmc_host/mmc1*            auto                    auto    default     voldmanaged=extSdCard:auto,encryptable=userdata
+/devices/20200000.usb/usb*sda              auto                    auto    default     voldmanaged=UsbDriveA:auto
+/devices/20200000.usb/usb*sdb              auto                    auto    default     voldmanaged=UsbDriveB:auto
+/devices/20200000.usb/usb*sdc              auto                    auto    default     voldmanaged=UsbDriveC:auto
+/devices/20200000.usb/usb*sdd              auto                    auto    default     voldmanaged=UsbDriveD:auto
+/devices/20200000.usb/usb*sde              auto                    auto    default     voldmanaged=UsbDriveE:auto
+/devices/20200000.usb/usb*sdf              auto                    auto    default     voldmanaged=UsbDriveF:auto

recovery/root/init.recovery.usb.rc

@@ -0,0 +1,72 @@
+on init
+    chown system system /sys/class/android_usb/android0/terminal_version
+    chmod 0660 /sys/class/android_usb/android0/terminal_version
+    chown system system /sys/devices/20200000.usb/gadget/lun0/file
+    chmod 0660 /sys/devices/20200000.usb/gadget/lun0/file
+
+    write /sys/class/android_usb/android0/iSerial ${ro.serialno}
+    write /sys/class/android_usb/android0/f_rndis/manufacturer Samsung
+    write /sys/class/android_usb/android0/f_rndis/vendorID 04E8
+    write /sys/class/android_usb/android0/f_rndis/wceis 1
+
+    # set up the usb mass storage lun
+    write /sys/devices/20200000.usb/gadget/lun0/cdrom 0
+    write /sys/devices/20200000.usb/gadget/lun0/nofua 0
+    write /sys/devices/20200000.usb/gadget/lun0/ro 0
+
+on boot
+    setprop sys.usb.config none
+
+    write /sys/class/android_usb/android0/iManufacturer ${ro.product.manufacturer}
+    write /sys/class/android_usb/android0/iProduct ${ro.product.model}
+    write /sys/class/android_usb/android0/iSerial ${ro.serialno}
+    write /sys/class/android_usb/android0/bDeviceClass 0
+    write /sys/class/android_usb/android0/bDeviceSubClass 0
+    write /sys/class/android_usb/android0/bDeviceProtocol 0
+    write /sys/class/android_usb/f_mass_storage/inquiry_string "Samsung"
+
+    setprop sys.usb.config ${persist.sys.usb.config}
+
+on fs
+    mkdir /dev/usb-ffs 0770 shell shell
+    mkdir /dev/usb-ffs/adb 0770 shell shell
+    mount functionfs adb /dev/usb-ffs/adb uid=2000,gid=2000
+    write /sys/class/android_usb/android0/f_ffs/aliases adb
+
+on property:sys.usb.config=none
+    stop adbd
+    write /sys/class/android_usb/android0/enable 0
+    write /sys/class/android_usb/android0/idVendor 04E8
+    write /sys/class/android_usb/android0/idProduct 685E
+    write /sys/class/android_usb/android0/bDeviceClass 0
+    setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=adb
+    stop adbd
+    write /sys/class/android_usb/android0/enable 0
+    write /sys/class/android_usb/android0/idVendor 04E8
+    write /sys/class/android_usb/android0/idProduct 685E
+    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+    write /sys/class/android_usb/android0/enable ${service.adb.root}
+    start adbd
+    setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=mtp,adb
+    stop adbd
+    write /sys/class/android_usb/android0/enable 0
+    write /sys/class/android_usb/android0/idVendor 04E8
+    write /sys/class/android_usb/android0/idProduct 6860
+    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+    write /sys/class/android_usb/android0/enable 1
+    start adbd
+    setprop sys.usb.state ${sys.usb.config}
+
+on property:sys.usb.config=mass_storage,adb
+    stop adbd
+    write /sys/class/android_usb/android0/enable 0
+    write /sys/class/android_usb/android0/idVendor 04E8
+    write /sys/class/android_usb/android0/idProduct 685E
+    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+    write /sys/class/android_usb/android0/enable 1
+    start adbd
+    setprop sys.usb.state ${sys.usb.config}