[Xperia Z Q&A, Help & Troubleshooting] zuharedieb:
long time ago i can flashing stock rom with flashtool ,then i change it to any custom rom but it somany have bugs and erro or anything else .then after six month i decide to flash it to the stock rom ,but when i flash it with flashtool it says error .

This is the error log :

12/047/2017 17:47:49 - INFO - <- This level is successfully initialized

12/047/2017 17:47:54 - INFO - Flashtool Version 0.9.23.1 built on 11-01-2017 15:12:00

12/047/2017 17:47:55 - INFO - Executing search strategies to find proxy selector

12/047/2017 17:47:56 - INFO - No proxy found for IE. Trying next one

12/047/2017 17:47:57 - INFO - No proxy found for firefox. Trying next one

12/047/2017 17:47:57 - INFO - No proxy found for java. Trying next one

12/047/2017 17:47:58 - INFO - Syncing devices from github

12/047/2017 17:47:58 - INFO - Opening devices repository.

12/047/2017 17:47:59 - INFO - Scanning devices folder for changes.

12/048/2017 17:48:35 - INFO - Pulling changes from github.

12/048/2017 17:48:38 - INFO - Quietly closing devices repository.

12/048/2017 17:48:38 - INFO - Quietly closing devices repository.

12/048/2017 17:48:38 - WARN - close() called when useCnt is already zero

12/048/2017 17:48:38 - INFO - Devices sync finished.

12/048/2017 17:48:38 - INFO - Loading devices database

12/048/2017 17:48:38 - INFO - Loaded 94 devices

12/048/2017 17:48:38 - INFO - Starting phone detection

12/048/2017 17:48:44 - INFO - Device disconnected

12/050/2017 17:50:55 - INFO - List of connected devices (Device Id) :

12/050/2017 17:50:55 - INFO - List of ADB devices :

12/050/2017 17:50:56 - INFO - - none

12/050/2017 17:50:56 - INFO - List of fastboot devices :

12/050/2017 17:50:56 - INFO - - none

12/004/2017 18:04:01 - INFO - Device connected with USB debugging off

12/004/2017 18:04:01 - INFO - For 2011 devices line, be sure you are not in MTP mode

12/004/2017 18:04:05 - INFO - Device disconnected

12/004/2017 18:04:59 - INFO - Selected Bundle for Sony Xperia Z(C6603). FW release : 10.6.A.0.454. Customization : Customized UK

12/004/2017 18:04:59 - INFO - Preparing files for flashing

12/007/2017 18:07:35 - INFO - Please connect your device into flashmode.

12/009/2017 18:09:34 - INFO - Device connected in flash mode

12/009/2017 18:09:35 - INFO - Opening device for R/W

12/009/2017 18:09:35 - INFO - Reading device information

12/009/2017 18:09:35 - INFO - Phone ready for flashmode operations.

12/009/2017 18:09:35 - INFO - Opening TA partition 2

12/009/2017 18:09:36 - INFO - Current device : Unknown: Aug 24 2015/19:58:33 - CB5A1W4PV7 - Unknown: Aug 24 2015/19:58:33 - Unknown: Aug 24 2015/19:58:33 - Unknown: Aug 24 2015/19:58:33

12/009/2017 18:09:36 - INFO - Closing TA partition

12/009/2017 18:09:36 - INFO - Start Flashing

12/009/2017 18:09:36 - INFO - Processing loader.sin

12/009/2017 18:09:36 - INFO - Checking header

12/009/2017 18:09:36 - INFO - Flashing data

12/009/2017 18:09:36 - INFO - Loader : S1_Root_5ca3 - Version : APQ8064_39 / Boot version : S1_Boot_Lagan_1.1_10 / Bootloader status : ROOTED

12/009/2017 18:09:36 - INFO - Max packet size set to 512K

12/009/2017 18:09:36 - INFO - USB buffer size set to 512K

12/009/2017 18:09:43 - INFO - Parsing boot delivery

12/009/2017 18:09:43 - INFO - Ending flash session

12/009/2017 18:09:43 - ERROR - null

12/009/2017 18:09:43 - ERROR - Error flashing. Aborted

12/009/2017 18:09:43 - INFO - Device connected in flash mode

12/009/2017 18:09:44 - INFO - Device disconnected

12/009/2017 18:09:47 - INFO - Device connected in flash mode

Please help me im using Xperia Z c6603

and sorry my bad english