Android Reviews, Tutorials, How To's, Root, UnRoot, Flash for Android mobile phones and operating system

Showing posts with label Tips. Show all posts
Showing posts with label Tips. Show all posts

24 May 2015

How to Remove/Replace Kingroot (KingUser) with SuperSu

If you was one of those who root their devices by using KingRoot App and would like to remove kinguser and related files, you can replace it with the well known SuperSU.
I have made a small script to remove Chinese kingruser, all related files and folders, and install SuperSU.
This script will do all the work for you without using PC, just by terminal, first of all, thanks to chainfire for his SuperSU files.

Before starting :
  • Download and install Terminal emulator app
  • Download and unzip "" file
Steps :
  • Send the extracted folder "mrw" to the internal storage of your device and make sure that this folder contains 4 files
  • Open Terminal emulator and type :
  • Allow root permission
  • Type :
sh /sdcard/mrw/
  • It might display some error, at the end it will launch supersu or open supersu manually.
  • Update su binary normal, then reboot.
Done !
Notes :
  • The extracted folder must be in /Phone/ or you will need to change cmd.
  • This script must work for all devices waiting tester.
  • You might need to update SuperSu after rebooting your device. 
  • Please let me know the model of your device, if it worked for you.
  • Check this post also, How to Remove/Replace Chinese VRoot superuser with SuperSu 
Download :
  • Terminal emulator app LINK
  • LINK a new ver LINK.

26 February 2014

How to Change CSC for Samsung Galaxy Devices on Android KitKat

Samsung has pushed the official Android 4.4.2 KitKat to Samsung galaxy S4 a few days ago, after walking around this update, I have found that there is a problem while trying to change the CSC (product) code.
If you tried to change CSC by using cscselector app or terminal, you will not see any changes and the CSC will stuck in the default code.

I will show you how to change it easily

Requirements :
  • Rooted galaxy S4 or any galaxy device.
  • Installed root file explorer ES File Explorer or Root Explorer.
  • Installed CSCSelector or Terminal app
In my case, I will change CSC code from DBT to BTU.

Instructions :
  • Open ES File Explorer or Root Explorer and mount RW.
  • Navigate to : System / csc / BTU / system / csc /
  • Copy all the files on csc folder and go back to paste it in : System / csc /
  • Accept Overwriting or replacing files.
  • Use CSC selector app or Terminal method to change CSC to BTU.
Done !!!

Notes :
  • WARNING : Changing CSC will delete all data on your device.
  • This method will work only on ROOTED devices
  • This will only work if your current firmware support Multi-CSC
  • It might display "PreconfigUI does not support SingleCSC" if your current firmware doesn't support Multi-CSC.
  • This method should work for many galaxy devices which running Android jelly bean and KitKat. 
Links :
  • Android Terminal Emulator App HERE
  • CSC Selector App  HERE
  • ES File Explorer App HERE
  • Root Explorer App HERE
  • Region CSC code list HERE

12 August 2013

How to Backup & Restore EFS [IMEI] for All Samsung Galaxy S4 Variant

IMEI is a unique identification number programmed onto your device and you can check the unique IMEI of your device by dialing *#06# or written on sticker under the battery. It is required in order to be correctly identified on a mobile network.
Without IMEI, you cannot make calls, send SMS or use mobile data.

EFS is a partition on the internal memory of your device which contain important data including the IMEI.
If the data in this partition gets corrupt, you will lose your IMEI

Requirements :
1. Samsung galaxy S4 device
2. "Android Terminal Emulator" app (Link below)

Before starting :
1. Root your device
2. Download and install "Android Terminal Emulator" app

EFS Backing up Steps :
1. Open "Android Terminal Emulator" and type
Then enter
It will ask for root permission
2.A. For galaxy S4 GT-I9500 Type :
dd if=/dev/block/mmcblk0p3 of=/sdcard/efs.img
Then enter
B.  For galaxy S4 all LTE and US variant Type :
dd if=/dev/block/mmcblk0p10 of=/sdcard/efs.img
dd if=/dev/block/mmcblk0p11 of=/sdcard/mod1.bin
dd if=/dev/block/mmcblk0p12 of=/sdcard/mod2.bin
Then enter
C.  For galaxy S3 all LTE and US variant Type :
dd if=/dev/block/mmcblk0p11 of=/sdcard/efs.img
dd if=/dev/block/mmcblk0p12 of=/sdcard/mod1.bin
dd if=/dev/block/mmcblk0p13 of=/sdcard/mod2.bin
Then enter
3. Backup the created files on your phone's internal storage to your PC or the cloud.

EFS Restoring Steps :
1. Send the files (Step 3) to the internal storage of your device
2. Open "Android Terminal Emulator" and type :
Then enter
It will ask for root permission
3.A. For galaxy S4 GT-I9500 Type :
dd if=/sdcard/efs.img of=/dev/block/mmcblk0p3
Then enter
B. For galaxy S4 all LTE and US variant Type :
dd if=/sdcard/efs.img of=/dev/block/mmcblk0p10
dd if=/sdcard/mod1.bin of=/dev/block/mmcblk0p11
dd if=/sdcard/mod2.bin of=/dev/block/mmcblk0p12 
Then enter
C. For galaxy S3 all LTE and US variant Type :
dd if=/sdcard/efs.img of=/dev/block/mmcblk0p11
dd if=/sdcard/mod1.bin of=/dev/block/mmcblk0p12
dd if=/sdcard/mod2.bin of=/dev/block/mmcblk0p13 
Then enter
4. Restart your device
Done !
Notes :
~ It won't delete your data
~ Make sure you choose the correct cmd in restoring process
~ This method will work only on ROOTED devices
~ Backing up EFS partition is highly recommended for users who use the custom Roms
~ Use it at your own risk
~ This method won't repair your device if you don't have a backup of the EFS partition, but you can to try this How to Fix "Not Registered on Network"/Wrong IMEI for Galaxy S3/S4/Note2
~ Every device has unique partition, so you can't use this if you have backup file from another device

Downloads :
Android Terminal Emulator App HERE