diff --git a/python_api/assets/adbkey b/python_api/assets/adbkey
deleted file mode 100644
index f3a30ae..0000000
--- a/python_api/assets/adbkey
+++ /dev/null
@@ -1,28 +0,0 @@
------BEGIN PRIVATE KEY-----
-MIIEvgIBADANBgkqhkiG9w0BAQEFAASCBKgwggSkAgEAAoIBAQDaL6QiNwYYqb+Q
-n7t/DUJ1fcwSaEh2e9KYUu4KTc0f+LpULfMCjrNqncIr/2fUcjMrPeziIQGc4/jy
-MSwvQGTmG85umEXkDxI4Ma0o8oAzZTO+pluTKaJr4iOUkH6LIHolf3iFLkU+GID/
-OHeU2tkBhyizMEpnwQxdoEAQw8nCEx0FWai+YyjERdNqo/ie9Cy3dbf1UtyjRL5K
-d8I96JloBYa0voyLA9/79pjKHJQFI8JB/8AZchHiJmE2g/c4XvfrKykBpTZR4Miv
-M8IGl+gqC/7qAr4yQet6EpQT72yLoPx51xzbrGrS9xhg5RgUWrU+2jXOsIzNYGtR
-QPzIfv4tAgMBAAECggEANH3XuB+SyOY13z5+pl9zSL7+FMOgA1lg3iK9gB8dpX56
-nXv8hfX89j6EE3+75CGha9rXHcQhFjTGlMX9wlR0seOos3TRA8AYewqAhWRqMXM8
-kraFO499swTR2JE20JP8rv7O6QOrxvewOTbFljtckACLayjIDdQk/HVsVFw2Mwli
-bkutBl049hq6UhCimd1tN4wksfeb6Fa8o3OO7+0/Op2LGKwxyZJTnYMVeqObv//4
-yn1oOxfSmYAYLxF3sk5z+0wPlID0IEd8Zxk3Bx1RJPPCFfCzeO7BCmbEUfvVEGxJ
-k7xQtEKW484bPDKvZS7Lthw4lkSsDGQjK4r/RrxZoQKBgQDt85u2rSOZvnROcDVK
-E7RrDDbTHj2XVnXiPiJp2P5nu+cY588zX9JQwIzSBhhHclg2GLeBLsSTfZol7mpD
-efmmHuIPc7g2LtcXUZ3wCDPgaN758nQvgdvvJ66ErevKZKs+mmpO0xKbRPta5b97
-rXWmANxPVKBGRNWJbUINgakEeQKBgQDqvD03xRAYIlnVbuWm0tGflsxTXB6b0yue
-ZTVekolGs2WAIMJNCz0JHyaCTRVbd/X14q7VB962HGoK8W+Ywy7fwdxuacIw6EjT
-RiVhgJXOmRLMA7SHGKpGy77C7cwOJyIAklo0+sM6POYMMLyRWNjeIOGGHy8ad3Vw
-8FlbvZASVQKBgQCr1MVXj4Qr3ArlMcZprf0VaIaWwjm79aW/MRts0FQ22MwzggJw
-mPupcMLAT8JspbfpqMOrN/iggY01Ywu9mnGbcqXQfsJB7mVI45ln4qSDo3eRi3I3
-dFE8TK2MBoRFbZjz5lJqhaXkFlZk94/lYgeZTvnJF9V9qOuDCDEwy7cgEQKBgDSe
-e86boy71zFN2544M5iazJBxvowDlRnrcTyljCdjKcC9XqJaitUztKbG929LEQmOb
-K/vfJsKF/hNz6cNBxaktCN/LX1edSm3p5IlFzM8iKz+GeRprogf6tkl2Cu8FQK8G
-H6iOqeLNMfh7mFmwo/SvRD7PkLyLGM13Y2CYTsp9AoGBAOFLzvhYXIApel1X4Pdp
-PwspYEqHW5JqktoQ38dh4nZ6ArPFreaJ4sKYpuhW0Iq1ZSaegZkPzI1cBfLfscAb
-LOMb5aNSsZgutCCWRGLuzC5ecKjUP2YHC1pJk+08tOhUKKGnsRmu0N+IUnmlQqJH
-ZERdfgjBenmNoXkj3lr5BMZY
------END PRIVATE KEY-----
diff --git a/python_api/assets/boot-1.4.01.16100-mod-happyz-181214.img b/python_api/assets/boot-1.4.01.16100-mod-happyz-181214.img
deleted file mode 100644
index 51fd094..0000000
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diff --git a/python_api/assets/boot-1.4.01.16100-mod-happyz-181214.img.md5 b/python_api/assets/boot-1.4.01.16100-mod-happyz-181214.img.md5
deleted file mode 100644
index 975d469..0000000
--- a/python_api/assets/boot-1.4.01.16100-mod-happyz-181214.img.md5
+++ /dev/null
@@ -1 +0,0 @@
-1867e8378c68753224677f8e00f81aad
diff --git a/python_api/assets/boot-1.4.01.16100.img b/python_api/assets/boot-1.4.01.16100.img
deleted file mode 100644
index 0c213ab..0000000
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diff --git a/python_api/assets/boot-1.4.01.16100.img.md5 b/python_api/assets/boot-1.4.01.16100.img.md5
deleted file mode 100644
index 42a1641..0000000
--- a/python_api/assets/boot-1.4.01.16100.img.md5
+++ /dev/null
@@ -1 +0,0 @@
-6a83136b15ad2a55f3e0240a0fe9c1a7
diff --git a/python_api/assets/install-recovery.sh b/python_api/assets/install-recovery.sh
deleted file mode 100755
index f62cf0b..0000000
--- a/python_api/assets/install-recovery.sh
+++ /dev/null
@@ -1,17 +0,0 @@
-#!/system/bin/sh
-
-# If you're implementing this in a custom kernel/firmware,
-# I suggest you use a different script name, and add a service
-# to launch it from init.rc
-
-# Launches SuperSU in daemon mode only on Android 4.3+.
-# Nothing will happen on 4.2.x or older, unless SELinux+Enforcing.
-# If you want to force loading the daemon, use "--daemon" instead
-
-/system/xbin/daemonsu --auto-daemon &
-
-# Some apps like to run stuff from this script as well, that will 
-# obviously break root - in your code, just search this file
-# for "install-recovery-2.sh", and if present, write there instead.
-
-/system/etc/install-recovery-2.sh
diff --git a/python_api/assets/libsupol.so b/python_api/assets/libsupol.so
deleted file mode 100644
index 5afb467..0000000
Binary files a/python_api/assets/libsupol.so and /dev/null differ
diff --git a/python_api/assets/shankerzhiwu_changepwd.pkg b/python_api/assets/shankerzhiwu_changepwd.pkg
deleted file mode 100644
index b9bbe46..0000000
Binary files a/python_api/assets/shankerzhiwu_changepwd.pkg and /dev/null differ
diff --git a/python_api/assets/shankerzhiwu_disableidcheck.pkg b/python_api/assets/shankerzhiwu_disableidcheck.pkg
deleted file mode 100644
index 2cb9bd0..0000000
Binary files a/python_api/assets/shankerzhiwu_disableidcheck.pkg and /dev/null differ
diff --git a/python_api/assets/start_eufwupdater.sh b/python_api/assets/start_eufwupdater.sh
deleted file mode 100644
index d848c0f..0000000
--- a/python_api/assets/start_eufwupdater.sh
+++ /dev/null
@@ -1,128 +0,0 @@
-#!/bin/sh
-
-# $1 update package
-# $2 output directory
-# $3 pub key to verify sig
-# $4 pri key to decrypt data key
-
-SIG_FILE="$2/sig.dat"
-AES256_KEY="$2/aes256.key"
-IV="$2/iv"
-
-ANIM_SIG_FILE="$2/anim_sig.dat"
-ANIM_PID=0
-
-
-epd_cmd()
-{
-  epd_fb_test $@ >/dev/null 2>&1
-}
-
-
-########################################
-# file header check
-########################################
-HEAD_MARK=`head -c 4 $1`
-if [ $HEAD_MARK != "DPUP" ]
-then
-  echo "Invalid file"
-  exit 0
-fi
-
-
-DATA_OFFSET=`dd if=$1 bs=4 skip=1 count=1 2>/dev/null | od -A n -t d4 -v`
-BODY_SIZE=`dd if=$1 bs=4 skip=2 count=1 2>/dev/null | od -A n -t d4 -v`
-########################################
-# start animation for package check
-########################################
-ANIM_HEADER_OFFSET=$(( $DATA_OFFSET + $BODY_SIZE ))
-if [ -z "$ANIM_HEADER_OFFSET" ]
-then
-  ANIM_HEADER_OFFSET=0
-fi
-ANIM_HEADER_SIZE=`dd if=$1 bs=1 skip=$ANIM_HEADER_OFFSET count=4 2>/dev/null | od -A n -t d4 -v`
-if [ -z "$ANIM_HEADER_SIZE" ]
-then
-  ANIM_HEADER_SIZE=0
-fi
-ANIM_ARCH_SIZE=`dd if=$1 bs=1 skip=$(($ANIM_HEADER_OFFSET + 4)) count=4 2>/dev/null | od -A n -t d4 -v`
-ANIM_SIG_SIZE=`dd if=$1 bs=1 skip=$(($ANIM_HEADER_OFFSET + 8)) count=4 2>/dev/null | od -A n -t d4 -v`
-dd if=$1 of=$ANIM_SIG_FILE bs=1 skip=$(($ANIM_HEADER_OFFSET + 12)) count=$(($ANIM_SIG_SIZE)) 2>/dev/null
-ANIM_ARCH_OFFSET=$(($ANIM_HEADER_OFFSET + $ANIM_HEADER_SIZE))
-dd if=$1 bs=$ANIM_ARCH_OFFSET skip=1 2>/dev/null | head -c $(($ANIM_ARCH_SIZE)) | openssl dgst -sha256 -verify $3 -signature $ANIM_SIG_FILE 1>/dev/null
-if [ $? -eq 0 ]
-then
-  start_prepare_animation.sh $1 $2 $ANIM_ARCH_OFFSET $(($ANIM_ARCH_SIZE)) &
-  ANIM_PID=$!
-fi
-
-
-
-########################################
-# extract sig
-########################################
-SIG_SIZE=`dd if=$1 bs=4 skip=4 count=1 2>/dev/null | od -A n -t d4 -v`
-dd if=$1 of=$SIG_FILE bs=1 skip=20 count=$(($SIG_SIZE)) 2>/dev/null
-
-
-########################################
-# verify sig
-########################################
-# dd if=$1 bs=$(($DATA_OFFSET)) skip=1 2>/dev/null | head -c $(($BODY_SIZE)) | openssl dgst -sha256 -verify $3 -signature $SIG_FILE 1>/dev/null
-#if [ $? -ne 0 ]
-#then
-#  echo "Verify failed."
-#  exit 0
-#fi
-
-
-########################################
-# decrypt data key
-########################################
-ENC_KEY_OFFSET=$((20 + $SIG_SIZE))
-PAD_SIZE=$((16 - $SIG_SIZE % 16 ))
-if [ $PAD_SIZE -ne 16 ]
-then
-  ENC_KEY_OFFSET=$(( $ENC_KEY_OFFSET + $PAD_SIZE ))
-fi
-
-ENC_KEY_SIZE=`dd if=$1 bs=1 skip=${ENC_KEY_OFFSET} count=4 2>/dev/null | od -A n -t d4 -v`
-ENC_KEY_OFFSET=$(( $ENC_KEY_OFFSET + 4 ))
-dd if=$1 bs=1 skip=${ENC_KEY_OFFSET} count=$(($ENC_KEY_SIZE)) 2>/dev/null | openssl rsautl -decrypt -inkey $4 > ${AES256_KEY}
-
-
-########################################
-# extract iv
-########################################
-IV_OFFSET=$(($ENC_KEY_OFFSET + $ENC_KEY_SIZE))
-dd if=$1 of=$IV bs=1 skip=${IV_OFFSET} count=32 2>/dev/null
-
-
-########################################
-# decrypt data and extract directory tree
-########################################
-dd if=$1 bs=$(($DATA_OFFSET)) skip=1 2>/dev/null | head -c $(($BODY_SIZE)) | openssl enc -d -aes-256-cbc -K `cat ${AES256_KEY}` -iv `cat ${IV}` | tar -xz -C $2
-
-
-########################################
-# stop animation for package check
-########################################
-if [ $ANIM_PID -ne 0 ]
-then
-  kill $ANIM_PID
-  epd_cmd gray DU PART 0
-  epd_cmd wait 300000
-fi
-
-
-########################################
-# start updater
-########################################
-if [ -f ${2}/FwUpdater/eufwupdater.sh ]
-then
-  ${2}/FwUpdater/eufwupdater.sh
-  exit $?	# tentative
-else
-  echo "Invalid archive (No updater script)."
-  exit 0
-fi
diff --git a/python_api/assets/su b/python_api/assets/su
deleted file mode 100644
index c24a108..0000000
Binary files a/python_api/assets/su and /dev/null differ
diff --git a/python_api/assets/supolicy b/python_api/assets/supolicy
deleted file mode 100644
index 0073c3c..0000000
Binary files a/python_api/assets/supolicy and /dev/null differ
diff --git a/python_api/assets/updater_check.sh b/python_api/assets/updater_check.sh
deleted file mode 100755
index e64eefc..0000000
--- a/python_api/assets/updater_check.sh
+++ /dev/null
@@ -1,114 +0,0 @@
-#!/bin/sh
-
-
-DDAT_MOUNT_PATH=/tmp/ddat
-END_USER_UPDATER_PKG=${DDAT_MOUNT_PATH}/FwUpdater.pkg
-KEY_DETECTION_TMPF=/tmp/keyDetect.log
-
-
-
-# $1 : reboot=1, shutdown 0
-local_reboot()
-{
-  umount $DDAT_MOUNT_PATH
-  sync
-  sync
-  mount -o remount,ro /
-  if [ $1 -eq 1 ]
-  then
-    /sbin/reboot
-  else
-    /sbin/poweroff
-  fi
-
-  while [ 1 ]
-  do
-   sleep 3
-  done
-}
-
-
-#########################
-# mount tmp file system
-#########################
-mount -t tmpfs tmpfs /tmp
-
-#########################
-# Button check
-#########################
-
-# animation hint
-epd_fb_test gray DU PART 0 && \
-epd_fb_test gray GC16 PART 10 0 50 50 150 50 && \
-sleep 1 && \
-epd_fb_test gray GC16 PART 10 0 50 150 150 50 && \
-sleep 1 && \
-epd_fb_test gray GC16 PART 10 0 50 250 150 50 && \
-sleep 1 &
-
-# if HOME pressed, go into diagnosis mode directly
-busybox script -c "timeout -t 3 keyscan" -f -q ${KEY_DETECTION_TMPF}
-grep -Fq "HOME" ${KEY_DETECTION_TMPF}
-if [ $? -eq 0 ]
-then
-  rm ${KEY_DETECTION_TMPF}
-  epd_fb_test gray GC16 PART 10 0 50 50 150 250
-  initctl start diag
-  exit 0
-fi
-
-# if POWER pressed, cancel and remove update
-grep -Fq "POWER" ${KEY_DETECTION_TMPF}
-if [ $? -eq 0 ]
-then
-  rm ${KEY_DETECTION_TMPF}
-  mkdir ${DDAT_MOUNT_PATH}
-  mount /dev/mmcblk0p16 ${DDAT_MOUNT_PATH}
-  change_boot_mode.sh normal
-  rm -rf ${END_USER_UPDATER_PKG}
-  local_reboot 1
-  umount ${DDAT_MOUNT_PATH}
-fi
-
-rm ${KEY_DETECTION_TMPF}
-
-
-#########################
-# End User Updater check
-#########################
-
-mkdir ${DDAT_MOUNT_PATH}
-mount /dev/mmcblk0p16 ${DDAT_MOUNT_PATH}
-if [ -f ${END_USER_UPDATER_PKG} ]
-then
-  rawdata --get_dump=sig_key > /tmp/sig.key
-  rawdata --get_dump=dec_key > /tmp/dec.key
-  start_eufwupdater.sh ${END_USER_UPDATER_PKG} /tmp /tmp/sig.key /tmp/dec.key
-  ret=$?
-  if [ $ret -eq 0 ]
-  then
-    # remove pkg, change normal boot and reboot
-    change_boot_mode.sh normal
-    rm -rf ${END_USER_UPDATER_PKG}
-    local_reboot 1
-  # elif [ $ret -eq 1 ]
-  # then
-  #   # remain pkg, keep boot mode and shutdown
-  #   local_reboot 0
-  else
-    # remove pkg, change normal boot and shutdown
-    change_boot_mode.sh normal
-    rm -rf ${END_USER_UPDATER_PKG}
-    local_reboot 0
-  fi
-fi
-
-umount ${DDAT_MOUNT_PATH}
-
-#########################
-# Diag check
-#########################
-
-initctl start diag
-exit 0
-