How to Change Xperia Z1 SO-01F Docomo's Internal to 32gb at Rom Global C6903

Download Sony Flashtool.rar


Download SO-01f DoCoMo ftf first.



>Make sure the battery condition is above 80%.
>Make sure Debug Usb is Active.
>Make sure the SO-01F_14.3.B.0.310_Docomo.ftf firmware file has been downloaded and saved in defalult C: / Flashtool / Firmwares.
>Open the Flashtool.exe program by right-clicking run as administrator.
>After Flashtool open then click on Big Lightning logo then pop up Bootmode Chooser and select Flashmode.
>Then select the SO-01F_14.3.B.0.310_Docomo.ftf firmware you downloaded earlier.
>Check everything in the Wipe & Exclude field, Except PARTITION and click Flash directly.
>Wait a few seconds until a pop up window appears on your pc, then turn off phone.

>Press & Hold Volume Down Button.

>Wait until the process is complete, until there is a log finish.
>Unplug the usb cable & try turn on phone.
















Download Lolipop C6903 ftf 




>Make sure the battery condition is above 80%.
>Make sure Debug Usb Has Been On.
>Make sure the firmware file is already downloaded and saved in defalult C: / Flashtool / Firmwares.
>Open the Flashtool.exe program by right-clicking run as administrator.
>After Flashtool open then click on Big Lightning logo then pop up Bootmode Chooser and select Flashmode.
>Then select one of the firmware that you downloaded earlier will lolilop.
>Check everything in the Wipe and Exclude columns field that checks PARTITION and BASEBAND, Similarly with the MISC column tick NO FINAL VERIFICATION directly click Flash.
>Wait a few seconds until a pop up window appears on your pc, then turn off phone.

>Press & Hold Volume Down Button.
>Wait until the process is complete, until there is a log finish.
>Unplug the usb cable & try turn on phone.