How-To: Install CWM Recovery and Root Sony Xperia Z1 Running 14.3.A.0.757 Firmware

Install CWM Recovery and Root Sony Xperia Z1

Sony has gotten some new stability upgrades for their Xperia Z1 that are based on Andorid 4.4.2 KitKat with build number 14.3.A.0.757. Earlier upgrades to Android 4.4.2 KitKat had a lot of performance issues and this new upgrade is supposed to be able to fix most of that.

If you have already updated an Xperia Z1 C6903/C6902/C6906 or C6943 to the latest Android 4.4.2 KitKat 14.3.A.0.757 firmware, you’re probably also looking for a method to get custom recovery and also root this latest firmware.  In this guide, we show you how to do so.

Prepare your phone:

  1. This CMW recovery is only for use with for Xperia Z1 C6902/C6903/C6906/C6943 running latest Android 4.4.2 KitKat 14.3.A.0.757 Firmware.
  • Check firmware version: Settings > About device
  1. Have Android ADB and Fastboot drivers installed.
  2. Unlock the devices bootloader.
  3. Charge phone to at least over 60%
  4. Back up important sms messages, contacts and call logs
  5. Back up important media content by copying it to a PC.
  6. Make sure that USB Debugging Mode is enabled
    1. Go to Settings -> Developer Options ->USB debugging.
  7. Have an OEM data cable to connect your PC and your phone.

Note: The methods needed to flash custom recoveries, roms and to root your phone can result in bricking your device. Rooting your device will also void the warranty and it will no longer be eligible for free device services from manufacturers or warranty providers. Be responsible and keep these in mind before you decide to proceed on your own responsibility. In case a mishap occurs, we or the device manufacturers should never be held responsible.

Install CWM 6 Recovery on Xperia Z1 C6902/C6903/C6906/C6943 Running 14.3.A.0.757 Firmware:

  1. Download Doomlord’s Advanced Stock Kernel with CWM file. here  Extract  to get a .img file.
  2. Rename downloaded .img file “boot.img”
  3. Place downloaded boot.img file in the Minimal ADB and Fastboot folder
  4. If you have the Android ADB and Fastboot full package, just place downloaded and renamed boot.img file in Fastboot folder or Platform-tools folder.
  5. Open folder where the boot.img file was placed
  6. While pressing and holding the shift key, right click on any empty area in the folder. Then click on “Open Command Window Here”.
  7. Turn off the Xperia Z1 completely.
  8. Press the Volume Up Key and keep it pressed while plugging in the USB cable.
  9. You will see a blue light notification light on the phone, this means the device is connected in Fastboot mode.
  10. Now type the following command: fastboot flash boot boot.img
  11. Press Enter and CWM 6 recovery will flash in the Xperia Z1.
  12. When recovery is flashed, issue this command: fastboot reboot
  13. If this doesn’t work you can also reboot the device manually.
  14. Your device should reboot now and, when you see the Sony logo and a pink LED, press the Volume Up key and you will enter recovery.

You should now see the custom recovery installed.

Root Xperia Z1 C6902/C6903/C6906/C6943 Running 14.3.A.0.757Firmware:

  1. Install CWM recovery first using the guide above.
  2. Now, download file. here
  3. Place downloaded file on phone’s external sd card.
  4. Now boot phone into CWM recovery. Turn off the device first. Then turn it on, you should see a Pink LED, when you do, press Volume Up Key rapidly.
  5. You should now the CWM recovery interface
  6. In CWM, select “Install Zip > Choose Zip from SDcard > Select > Yes”.
  7. file will flash
  8. When flashing is complete, reboot device.


How to check if the device is properly rooted or not?

  1. Go to the Google Play Store on the Xperia Z1.
  2. Find and install “Root Checker“. here
  3. Open Root Checker.
  4. Tap on “Verify Root”.
  5. You will be asked for SuperSu rights, tap “Grant”.
  6. It should see Root Access Verified Now!


Do you have a rooted Sony Xperia Z1?

Share your experience in the comment section box below.


About The Author