base on Seattle-AL10A 9.1.1.143(C00E141R2P1)
usage:
Code:
fastboot flash kernel kernel_141_selinux.img
Code:
λ adb shell
HWSEA-A:/ $ su
HWSEA-A:/ # setenforce 0
HWSEA-A:/ # getenforce
Permissive
View attachment kernel_141_selinux.zip
Related
SU v2.65 doesn’t know how to cd /sdcard/Download/ - it apparently doesn’t know how to resolve the sdcard symbolic link. The work-around is you have to either
cd /sdcard/Download/ before you su
exit from su so you can cd /sdcard/Download/ then re-run su
[email protected]:/ # cd /sdcard/Download/
tmp-mksh: cd: /sdcard/Download: No such file or directory
[email protected]:/ # exit
[email protected]:/ $ cd /sdcard/Download/
[email protected]:/sdcard/Download $ pwd
/sdcard/Download
[email protected]:/sdcard/Download $ su
[email protected]:/mnt/shell/emulated/0/Download #
This did not happen prior to updating SuperSU.
Environment: Samsung Tab-S (SM-T800), Android 5.0.2, Kernel version 3.4.39-5941801
My device is a Xiaomi Mi A2 / Android 8.1, rooted with Magisk v16.0. I am running Termux. Now, look at this:
Code:
$ whoami
u0_a88
$ su
# echo foo >bar
# ls -l bar
-rw-r--r-- 1 root root 4 2018-08-21 22:08 bar
# chown u0_a88.u0_a88 bar
# exit
$ ls -l bar
-rw-r--r-- 1 u0_a88 u0_a88 4 2018-08-21 22:08 bar
$ echo baz >bar
bash: bar: Permission denied
A reboot does not help. The file remains inaccessible to user u0_a88 despites having been made the owner.
What is going on here?
feklee said:
What is going on here?
Click to expand...
Click to collapse
SELinux is going on:
Code:
$ su
# getenforce
Enforcing
To get permissions to bar:
Code:
$ su
# restorecon bar
# exit
$ echo baz >bar
How to use the Hardware Test App from ASUS on a Zenfone running a CustomROM
The Hardware Test App from ASUS for the Zenfone 8 can also be used on a ASUS Zenfone 8 running a CustomROM.
But to get the App working on a CustomROM some efforts are neccessary.
The ASUS Hardware Test App needs the permission to modify system settings. To get this permission the app must be signed with the platform certificate used for the running Android OS.
And because these certificates are not available for the public for all public available CustomROMs (for some very good reasons ...) you must compile your own CustomROM for using the ASUS Hardware Test App on a CustomROM.
So -- for those who still want to continue: Here are the steps neccessary to run the Hardware Test App from ASUS for the Zenfone 8 on a phone running a CustomROM :
First copy the apk with the ASUS Hardware Test App from a Zenfone 8 running the original Android 12 from ASUS to your PC.
This is the file
/system/apps/SMMI_TEST/SMMI_TEST.apk
on the phone running the ASUS Android OS.
Now it's neccessary to sign the App with the platform key from your CustomROM:
In the OmniROM (and I assume that's also true for other AOSP based CustomROMs) the neccessary files, platform.pk8 and platform.x509.pem, are in the directory
Code:
./build/make/target/product/security
in your build tree for the CustomROM, e.g.
Code:
[[email protected] /data/develop/android/OmniROM]$ ls -l ./build/make/target/product/security/platform.*
-rw-------. 1 xtrnaw7 xtrnaw7 1219 Jun 25 09:39 ./build/make/target/product/security/platform.pk8
-rw-rw-r--. 1 xtrnaw7 xtrnaw7 1460 Jun 25 09:39 ./build/make/target/product/security/platform.x509.pem
[[email protected] /data/develop/android/OmniROM]$
Now re-sign the apk file using these commands:
Code:
# remove the current certificate files from the apk (probably not neccessary -- but shouldn't harm)
#
zip -d SMMI_TEST.apk META-INF/CERT.SF META-INF/CERT.RSA
# do a zip align for the apk and write the output to SMMI_TEST1.apk
#
# (zipalign is part of the OTA tools)
#
/data/develop/android/otatools/bin/zipalign 4 SMMI_TEST.apk SMMI_TEST1.apk
# test the result (there should be NO output from this command)
#
/data/develop/android/otatools/bin/zipalign -c 4 SMMI_TEST1.ap
# and now sign the apk with the platform key from the development tree for your self compiled CustomROM
# (apksigner.jar is part of the Sdk from Google for Android)
#
java -jar ./Android/Sdk/build-tools/33.0.0/lib/apksigner.jar sign --key platform.pk8 --cert platform.x509.pem SMMI_TEST1.apk
That's it . The re-signed apk file SMMI_TEST1.apk should work on your CustomROM
To test it:
To test the signed apk do:
Copy the signed apk to the phone running your self compiled CustomROM and issue
Code:
ls -l /sdcard/Download/SMMI_TEST1.apk
# 25733396 in the next command is the size of the file /sdcard/Download/SMMI_TEST1.apk in byte
#
cat /sdcard/Download/SMMI_TEST1.apk | pm install -S 25733396
If you get an error like this
Code:
130|ASUS_I006D:/ # ls -l /sdcard/Download/SMMI_TEST1.apk
-rw-rw---- 1 u0_a111 media_rw 25733396 2022-08-04 19:02 /sdcard/Download/SMMI_TEST1.apk
ASUS_I006D:/ #
ASUS_I006D:/ # cat /sdcard/Download/SMMI_TEST1.apk | pm install -S 25733396
Failure [INSTALL_FAILED_SHARED_USER_INCOMPATIBLE: Reconciliation failed...: Reconcile failed: Package com.asus.atd.smmitest has no signatures that match those in shared user android.uid.system; ignoring!]
1|ASUS_I006D:/ #
something went wrong signing the apk. Just do it again.
To install the apk do:
If not already done:
Compile your own CustomROM (using the certificates used to sign the ASUS Hardware Test App!) and install it on the ASUS Zenfone 8. (see How to compile the OmniROM for the ASUS Zenfone 8 for how to compile the OmniROM)
Install Magisk on your phone running the self compiled CustomROM
Simulate a Magisk Module using these commands:
Code:
adb shell su - -c mkdir -p /data/adb/modules/SMMI_TEST/system/app/SMMI_TEST
adb push SMMI_TEST1.apk /sdcard/Download/
adb shell su - -c cp /sdcard/Download/SMMI_TEST1.apk /data/adb/modules/SMMI_TEST/system/app/SMMI_TEST/SMMI_TEST1.apk
adb shell su - -c chmod o+r /data/adb/modules/SMMI_TEST/system/app/SMMI_TEST/SMMI_TEST1.apk
and reboot the phone
Code:
adb reboot
After the reboot the ASUS Hardware Test App should be visible in the directory /system/app, e.g.
Code:
130|ASUS_I006D:/ # find /system/app/SMMI_TEST/
/system/app/SMMI_TEST/
/system/app/SMMI_TEST/SMMI_TEST1.apk
ASUS_I006D:/ #
To execute the ASUS Hardware Test App do
Code:
# open a shell on the ASUS Zenfone 8 (either local or via "adb shell"), become root user
su -
and execute
Code:
# switch SELinux to permissive mode (I currently do not know the neccessary SELinux policies to avoid this step ...)
#
setenforce 0
# and start the ASUS Hardware Test App from within the shell
#
am start -n com.asus.atd.smmitest/com.asus.atd.smmitest.main.MAIN
Do not forget to enable SELinux enforcing mode after the tests are done (or reboot the phone ...)
Code:
# switch SELinux to permissive mode (I currenlty do not know the neccessary SELinux policies to avoid this step ...)
#
setenforce 1
Sample Script to start the ASUS Hardware Test App
Code:
# simple script to start the ASUS Hardware App
CUR_SELINUX_STATUS="$( getenforce )"
CUR_USERID=$( id -u -n )
RESTORE_SELINUX_STATE="false"
if [ "${CUR_SELINUX_STATUS}"x != "Permissive"x ] ; then
if [ "${CUR_USERID}"x != "root"x ] ; then
echo "Either start this script as user \"root\" or set the SELinux mode to \"permissive\" using the command \"setenforce 0\" before starting this script"
exit 1
fi
echo "Setting the SELinux mode to \"Permissive\" ..."
setenforce 0
RESTORE_SELINUX_STATE="true"
else
echo "The SELinux mode is already \"Permissive}\" "
fi
am start -n com.asus.atd.smmitest/com.asus.atd.smmitest.main.MAIN 2>&1 | tee /sdcard/Download/test.out
if [ ${RESTORE_SELINUX_STATE} = true ] ; then
echo "Press return when done with the tests .."
read USER_INPUT
echo "Setting the SElinux mode back to \"Enforcing\" ...."
setenforce 1
else
echo "Do not forget to set the SELinxu mode back to \"Enforcing\" using the command \"setenforce 1\" "
fi
Trouble Shooting
If the boot process of the phone hangs after adding the pseudo Magisk Module for the ASUS Hardware Test App do:
Code:
# connect to the phone via adb (that should work!)
#
adb shell
# become root user
#
su -
# delete the file with the AUS Hardware Test App
#
rm /data/adb/modules/SMMI_TEST/system/app/SMMI_TEST/SMMI_TEST1.apk
# and reboot the phone
#
reboot
Most probably something went wrong signing the app or you did not do the zip align (there should be some messages visible in logcat to find the reason for the boot loop; check the output of logcat before rebooting the phone)
A useful test to find reason for the boot loop is :
Code:
# try to install the apk as root user
#
su -
# and then
#
setenforce 0
pm install /sdcard/Download/SMMI_TEST.apk
If booting the phone works but the App does not start make sure that the SELinux status is permissive.
Update 26.06.2022
The adb commands to create the "simulated" Magisk Module must be executed by the user root - fixed.
Added a sample script to start the ASUS Hardware Test Tool
Update 04.08.2022
Added instructions to to test if signing the apk was successfull
Thank you so much for your guides! This is very detailled documentation with good explanations!
How to backup the data from the phone using rsync and ssh (including some hints for using sshd on an Android phone)
Like for all computer it's important to have a backup of the data on the phone.
For those who like me don't like to store their private data in one of the suspicious clouds there is a solution with standard Linux tools:
Use rsync and ssh to backup the data from the phone to your local workstation (see the man page for rsync for details regarding rsync and why it is useful for this task)
The neccessary tools for Android for this method can be installed with the Magisk Module MagiskSSH.
Download the Magisk Module with MagiskSSH from here
https://gitlab.com/d4rcm4rc/MagiskSSH_releases
Copy the ZIP file with the Magisk Module to the phone :
Code:
adb push magisk_ssh_v0.14.zip /sdcard/Download/
and install it via the module installation from within the Magisk App or manuell using :
Code:
adb shell su - -c /data/adb/magisk/magisk64 --install-module /sdcard/Download/magisk_ssh_v0.14.zip
Sample output of the installation:
Code:
ASUS_I006D:/ # /data/adb/magisk/magisk64 --install-module /sdcard/Download/magisk_ssh_v0.14.zip
- Current boot slot: _a
- Device is system-as-root
*******************************
OpenSSH for Android
*******************************
[0/7] Preparing module directory
[1/7] Extracting architecture unspecific module files
[2/7] Extracting libraries and binaries for arm64
[3/7] Configuring library path wrapper
[4/7] Recreating symlinks
[5/7] Creating SSH user directories
[6/7] Found sshd_config, will not copy a default one
[7/7] Cleaning up
- Setting permissions
- Done
ASUS_I006D:/ #
A reboot is required now.
Code:
adb shell reboot
For the next tasks open an adb shell and become root user.
Next create the authorized_keys file for the user root :
Code:
touch /data/ssh/root/.ssh/authorized_keys
chmod 600 /data/ssh/root/.ssh/authorized_keys
and add your public ssh key to the file /data/ssh/root/.ssh/authorized_keys.
To make sure that the keys and other data files for the MagiskSSH module are not removed while deinstalling the module you should create the file /data/ssh/KEEP_ON_UNINSTALL:
Code:
touch /data/ssh/KEEP_ON_UNINSTALL
The MagiskSSH module also installs a service to start sshd after each reboot: to disable this start create the file /data/ssh/no-autostart:
Code:
touch /data/ssh/no-autostart
To manually start or stop the sshd use the script /data/adb/modules/ssh/opensshd.init :
Code:
# start the sshd (as user root)
#
/data/adb/modules/ssh/opensshd.init start
# to stop the sshd (as user root)
#
/data/adb/modules/ssh/opensshd.init stop
Now test the access via ssh from your Linux workstation:
Code:
ssh -l root <phone_ip_address> id
Use this command to retrieve the current IP address of the phone:
Code:
PHONE_IP_ADDRESS=$( adb shell ifconfig wlan0 | grep "inet addr:" | sed -e "s/.*inet addr://g" -e "s/[[:space:]]*Bcast.*//g" )
example :
Code:
[[email protected] ~]$ ssh -l root ${PHONE_IP_ADDRESS} id
uid=0(root) gid=0(root) groups=0(root) context=u:r:magisk:s0
[[email protected] ~]$
Now you can use rsync to backup the data from the phone, e.g. to backup the photos from the phone do :
Code:
# on your local Linux workstation do:
# start the sshd on the phone via adb if not already running
#
adb shell su - -c /data/adb/modules/ssh/opensshd.init start
# retrieve the current IP address from the phone
#
PHONE_IP_ADDRESS=$( adb shell ifconfig wlan0 | grep "inet addr:" | sed -e "s/.*inet addr://g" -e "s/[[:space:]]*Bcast.*//g" )
# backup the new photos from the phone to the Linux workstation (rsync only copies new files from the phone)
# to the local directory /data/backup/ASUS_ZENFONE8/DCIM
#
rsync -av --rsync-path /data/adb/modules/ssh/usr/bin/rsync [email protected]${PHONE_IP_ADDRESS}:/sdcard/DCIM/ /data/backup/ASUS_ZENFONE8/DCIM
# optional stop the sshd on the phone via adb
#
adb shell su - -c /data/adb/modules/ssh/opensshd.init stop
Note: The sshd configuration file used is /data/ssh/sshd_config
Sample Script to backup all data in the directory /sdcard
Code:
##!/bin/bash
#
# simple script to backup the data of an phone using adb, ssh, and rsync
#
# History
# 27.06.2022 /bs
# initial release
#
# for testing
#
#RSYNC_OPTIONS="${RSYNC_OPTIONS} --dry-run"
RSYNC_OPTIONS="${RSYNC_OPTIONS} --del "
# default is to backup the phone connected via adb over LAN
#
[ $# -ne 0 ] && ADB_OPTIONS="$*" || ADB_OPTIONS="-e"
# retrieve the serial number of the attached phone
#
SERIAL_NO="$( adb ${ADB_OPTIONS} shell getprop ro.serialno )"
if [ "${SERIAL_NO}"x = ""x ] ; then
echo "ERROR: Can not read the serial number of the connected phone"
exit 89
fi
VENDOR_MODEL="$( adb ${ADB_OPTIONS} shell getprop ro.product.vendor.model )"
# directory for the backup
#
BACKUP_DIR="/data/backup/ASUS_ZENFONE8/data_backup/${VENDOR_MODEL}_${SERIAL_NO}"
if [ ! -d "${BACKUP_DIR}" ] ; then
echo "ERROR: The directory \"${BACKUP_DIR}\" does not exist"
exit 99
fi
PHONE_IP_ADDRESS="$( adb ${ADB_OPTIONS} shell ifconfig wlan0 | grep "inet addr:" | sed -e "s/.*inet addr://g" -e "s/[[:space:]]*Bcast.*//g" )"
if [ "${PHONE_IP_ADDRESS}"x = ""x ] ; then
echo "ERROR: Can not detect the IP address of the phone"
exit 100
fi
echo "Updating a backup of the data on the phone with the serial number \"${SERIAL_NO}\" and the IP \"${PHONE_IP_ADDRESS}\" to the directory \"${BACKUP_DIR}\" ..."
set -x
# start the sshd if neccessary
#
adb ${ADB_OPTIONS} shell su - -c /data/adb/modules/ssh/opensshd.init start
# do the backup
#
time rsync ${RSYNC_OPTIONS} -av --rsync-path /data/adb/modules/ssh/usr/bin/rsync [email protected]${PHONE_IP_ADDRESS}:/sdcard/ "${BACKUP_DIR}/"
# stop the sshd
#
adb ${ADB_OPTIONS} shell su - -c /data/adb/modules/ssh/opensshd.init stop
set +x
How to enable access via ssh for non-root user
In the standard configuration installed by MagiskSSH ssh access is only allowed as user root because the ssh keys are in the directory /data and all non-root user can not read files in the directory /data. Therefor some efforts are neccessary to add ssh access for non-root user.
e.g. To enable the ssh access for the user shell do:
To configure ssh access for the user shell we must create a .ssh directory for the user shell in a directory tree owned by the user shell. The only directory on the phone owned by the user shell that can be used for this purpose is /storage :
Code:
ASUS_I006D:/ # ls -ld /storage
drwx--x--- 4 shell everybody 80 2022-06-26 18:37 /storage
ASUS_I006D:/ #
But unfortunately all files and directories in this directory are temporary and will be deleted after a reboot of the phone.
Therefor we configure a startup script in Magisk to create this directory tree after each reboot, e.g.
/data/adb/service.d/create_ssh_dir_for_shell.sh:
Code:
# /data/adb/service.d/create_ssh_dir_for_shell.sh
#
mkdir -p /storage/shell/.ssh
chmod -R 700 /storage/shell/
touch /storage/shell/.ssh/authorized_keys
echo "<ssh_public_key>" > /storage/shell/.ssh/authorized_keys
chmod 600 /storage/shell/.ssh/authorized_keys
chown -R shell:shell /storage/shell
Make the script executable:
Code:
su - -c chmod +x data/adb/service.d/create_ssh_dir_for_shell.sh
To test the script just execute it one time manually as user root.
Code:
su - -c sh data/adb/service.d/create_ssh_dir_for_shell.sh
Now create a backup of the sshd config file
Code:
su - -c cp /data/ssh/sshd_config /storage/ssh/sshd_config.org.$$
and add these lines at the end of the file /data/ssh/sshd_config
Code:
Match User shell
AuthorizedKeysFile /storage/shell/.ssh/authorized_keys
Restart the sshd if it's already running
Now test the access as user shell, example:
Code:
[[email protected] ~]$ ssh -l shell 192.168.1.148 id
uid=2000(shell) gid=2000(shell) groups=2000(shell) context=u:r:magisk:s0
[[email protected] ~]$
The reason for this config is the setting "StrictMode yes" in the sshd config file /data/ssh/sshd_config (see the man page for sshd_config for details). So another "solution" is to change this setting:
With the setting "StrictModes no" in the file sshd_config the directory with the authorized_keys file for the non-root users can be anywhere (for example in /sdcard/shell)
Execute as user root:
Code:
sed -i -e "s/.*StrictModes.*//g" -e "s/UsePrivilegeSeparation/StrictModes no\nUsePrivilegeSeparation/g" /data/ssh/sshd_config
and change the entry in the file /data/ssh/sshd_config for the authorized_keys file for the user shell, for example:
Code:
Match User shell
AuthorizedKeysFile /sdcard/shell/.ssh/authorized_keys
Afterwards restart the sshd:
Code:
/data/adb/modules/ssh/opensshd.init stop
/data/adb/modules/ssh/opensshd.init start
Now create the directories and files neccessary for the ssh access (see above) in the directory /sdcard/shell:
Code:
SUS_I006D:/ # find /sdcard/shell -exec ls -ld {} \;
drwxrws--- 3 u0_a118 media_rw 3452 2022-06-26 18:32 /sdcard/shell
drwxrws--- 2 u0_a118 media_rw 3452 2022-06-26 18:32 /sdcard/shell/.ssh
-rw-rw---- 1 u0_a118 media_rw 408 2022-06-26 18:32 /sdcard/shell/.ssh/authorized_keys
ASUS_I006D:/ #
and the access as user shell via ssh should work
Safe mode is a feature in Android phones where all third-party apps on the device become inaccessible when enabled.
Doing a Google search on Android safe mode, I found a lot of information that is outdated and no longer applies to the current Android version.
So this small HowTo contains some infos about using the Android safe mode in Android 13 ; the infos should also be valid for Android 12 but I did not test that yet.
How to check if the phone is booted into safe mode in the Android GU
In safe mode Android prints the string "Safe mode" in the lower left corner
How to check if the phone is booted into safe mode in a shell as root user
The root user on the phone can check the value of the property persist.sys.safemode; this property is set to 1 in safe mode and does not exist if not in safe mode
in safe mode:
Code:
ASUS_I006D:/ # id
uid=0(root) gid=0(root) groups=0(root) context=u:r:magisk:s0
ASUS_I006D:/ #
ASUS_I006D:/ # getprop persist.sys.safemode
1
ASUS_I006D:/ #
in normal mode:
Code:
ASUS_I006D:/ # id
uid=0(root) gid=0(root) groups=0(root) context=u:r:magisk:s0
ASUS_I006D:/ #
ASUS_I006D:/ # getprop persist.sys.safemode
ASUS_I006D:/ #
How to check if the phone is booted into safe mode in a shell as non-root user
Non-root user can not read the property persist.sys.safemode. Non-root user can use the output of the command dumpsys to check if the phone is booted into safe mode using this command:
dumpsys display | grep mSafeMode
e.g.:
in safe mode:
Code:
ASUS_I006D:/ $ id
uid=2000(shell) gid=2000(shell) groups=2000(shell),1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),1078(ext_data_rw),1079(ext_obb_rw),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats),3009(readproc),3011(uhid),3012(readtracefs) context=u:r:shell:s0
ASUS_I006D:/ $
ASUS_I006D:/ $ dumpsys display | grep mSafeMode
mSafeMode=true
ASUS_I006D:/ $
in normal mode;
Code:
ASUS_I006D:/ $ id
uid=2000(shell) gid=2000(shell) groups=2000(shell),1004(input),1007(log),1011(adb),1015(sdcard_rw),1028(sdcard_r),1078(ext_data_rw),1079(ext_obb_rw),3001(net_bt_admin),3002(net_bt),3003(inet),3006(net_bw_stats),3009(readproc),3011(uhid),3012(readtracefs) context=u:r:shell:s0
ASUS_I006D:/ $
ASUS_I006D:/ $ dumpsys display | grep mSafeMode
mSafeMode=false
ASUS_I006D:/ $
How to enable the safe mode for the next reboot in the Android GUI
To enable safe mode via the Android GUI do :
Presse the power button until the reboot dialog with Power Off, Restart, etc appears. Now long tap on the PowerOff button in that dialog until the dialog to reboot into safe mode appears and press ok in that dialog. The phone will then be booted into safe mode.
How to enable the safe mode for the next reboot via shell command
To enable safe mode for the next reboot of the Android OS when in the running Android OS open a shell (either local or via adb), become root user and, issue
Bash:
setprop persist.sys.safemode 1
reboot
Note that Android will automatically clear this property after booting into the normal mode again
How to enable the safe mode for the next reboot when booted into the recovery
The current value for the property persist.sys.safemode is stored in the file
/data/property/persistent_properties
e.g:
Code:
ASUS_I006D:/ # grep safe /data/property/persistent_properties
persist.sys.safemode
ASUS_I006D:/ #
Unfortunately this is a binary file with an unknown format:
Code:
ASUS_I006D:/ # file /data/property/persistent_properties
/data/property/persistent_properties: data
ASUS_I006D:/ #
So it's not clear how to enable safe mode for the next reboot while booted in to recovery.
A very ugly workaround to enable safe mode for the next reboot while the phone is booted from the recovery can be implemented using a Magisk init script (if Magisk is installed on the phohe, of course - see How to run a script at every boot using Magisk for details):
Code:
ASUS_I006D:/ # cat /data/adb/post-fs-data.d/enable_safe_mode
/data/adb/magisk/magisk64 resetprop -n persist.sys.safemode 1
#
# make sure booting into safe mode is only a onetime job!
#
rm /data/adb/post-fs-data.d/enable_safe_mode
ASUS_I006D:/ #
Notes:
Using this method the propery persist.sys.safemode is not set after booting into safe mode and the safe mode can only be determind by the output of the dumpsys command, e.g.:
Code:
ASUS_I006D:/ # id
uid=0(root) gid=0(root) groups=0(root) context=u:r:magisk:s0
ASUS_I006D:/ #
ASUS_I006D:/ # getprop persist.sys.safemode
ASUS_I006D:/ #
ASUS_I006D:/ # dumpsys display|grep mSafeMode
mSafeMode=true
ASUS_I006D:/ #
Be aware that without deleting the Magisk init script for the workaround the phone will always boot into safe mode.
How to exit the safe mode
To exit the safe mode Just reboot the phone