You Can Use The Below Method For Upgrade Sony XPERIA Z3 Dual D6633 To Android 4.4 Kitkat/And If You Want To Hard Reset It By Flashing The Stock Rom/ In Case If You Are Using Any Custom Rom And Want Back To Stock And Official Firmware Or Facing The Bootloop Problem. This Method Is Also Useful For Sudden Death/Bricked/Not Power And Also After Flashing The Stock Rom imei Null or Unknown Baseband Problems Can Be Solve.
Pre Requirements :-
- Sony XPERIA Z3 Dual D6633 Stock ftf Rom (use this pass if needed)
- And the drivers The drivers are located usually C: / FlashTool / Drivers After installing FlashTools.
How To Update/Flash Sony XPERIA Z3 Dual D6633 Android 4.4 KiKat Stock Rom.
1-Open Flash tools and click the distance as described in the image below.
2-In the next window, click “Flashmode” and then “OK” as in the image below.
3-In the next window, select the rom and “OK” as in the image below.