How to Update / Change / Repair Firmware in Sony Xperia phones?

Necessary Tools and Drivers

  1. Sony PC Companion with Drivers
  2. Sony FlashTool 32bit
  3. Sony FlashTool 64bit

Install Necessary Tools

  1. Start by installing Sony PC Companion with Drivers
  2. Unpack and Install FlashTool, then find x10flasher.jar which is in C:\FlashTool folder and replace it with the file from the unpacked archive.

WARNING!
Changing firmware in the phone will erase all of your data.
All described operations you are doing at your own risk.
If want saves your data do a backup before start.
Battery must be at least 60% if not you will kill phone completely.

Change/ Repair/ Update Firmware in Sony Xperia phones

1. First of all, we need to find out exact phone model that we've got. 

2. Turn on FlashTool(depend on windows system 32/64bit use file Flashtool or Flashtool64)sony flashtool screen
3. Go to XperiFirm,

sony flashtool xperiafirm icon

xperiafirm screen v1

4. Select phone model,xperiafirm model select

5. Now choose exact model from step No. 1.xperiafirm model exacly select

6. Select firmware by country that you need
(unbranded firmware you can recognize by name CUSTOMIZED_CE1 or CUSTOMIZED_SG they come with all language packages from around the world)xperiafirm model customization select

7. Download firmware by pressing firmware version button.

xperiafirm model firmware download

xperiafirm model firmware download v2

xperiafirm model firmware download v3


8. After download is finished close XperiaFirm, now FlashTool will ask you if you want to add downloaded firmware to database just click YES button to confirm.sony flashtool ask if add new firmware to database
9. Next press lightning button, flashtool sony arrow to lighting

10. Select Flashmode and confirm with OK button.

flashtool sony arrow to flashmode and ok

flashtool sony arrow to flashmode and ok


11. Select phone model and model number of your phone, firmware customization and firmware version the one you've downloaded in step No. 7. 

flashtool sony arrow to model select

flashtool sony arrow to exacly model

flashtool sony arrow to customization select

flashtool sony arrow to firmware version

12. Next check userdata, cust-reset everything else must be unchecked.
flashtool sony arrow to check option to correct flash
13. When you're ready press Flash button.flashtool sony arrow to flash button

14. Connect turned off the phone to USB cable with pressed volume down button.
15. Release volume down button when you see "Device connected in flash mode" information in FlashTool windows log.The flash process starts, now just wait until process end.

flashtool sony flash process log

flashtool sony flash process log

flashtool sony flash process log

flashtool sony flash process log with success


16. After all disconnect phone from the USB cable. Turn it on with the power button and leave it on a flat surface until phone turns on completely
(this is very important otherwise the phone will not complete the first start and you will see an error message on the phone screen).
17. Congratulations your flash process ended successfully. Now you can enjoy a phone with new firmware.

By Wojtek Góralczyk on Nov 23, 2017