[Xperia Z2 Q&A, Help & Troubleshooting] TMIXALOPOULOS:
I'm trying to flash a stock ROM with flash tool, but I get ERROR message for system.sin.

11/041/2015 13:41:08 - INFO - Flashtool Version 0.9.19.1 built on 05-09-2015 23:00:00

11/041/2015 13:41:08 - INFO - Executing search strategies to find proxy selector

11/041/2015 13:41:08 - INFO - No proxy found for IE. Trying next one

11/041/2015 13:41:08 - INFO - No proxy found for firefox. Trying next one

11/041/2015 13:41:08 - INFO - No proxy found for java. Trying next one

11/041/2015 13:41:08 - INFO - Syncing devices from github

11/041/2015 13:41:09 - INFO - Scanning devices folder for changes.

11/041/2015 13:41:24 - INFO - Pulling changes from github.

11/041/2015 13:41:25 - INFO - Devices sync finished.

11/041/2015 13:41:30 - INFO - Device disconnected

11/017/2015 14:17:49 - INFO - Selected Bundle for Sony Xperia Z2 (D6503). FW release : 23.2.A.1.62. Customization : T-Mobile PL

11/017/2015 14:17:50 - INFO - Preparing files for flashing

11/019/2015 14:19:20 - INFO - Please connect your device into flashmode.

11/021/2015 14:21:18 - INFO - Device connected in flash mode

11/021/2015 14:21:18 - INFO - Opening device for R/W

11/021/2015 14:21:19 - INFO - Reading device information

11/021/2015 14:21:19 - INFO - Phone ready for flashmode operations.

11/021/2015 14:21:19 - INFO - Opening TA partition 2

11/021/2015 14:21:19 - INFO - Current device : D6503 - CB5A20U3E3 - 1281-1692_R4C - 1278-4770_23.2.A.1.62 - GLOBAL-LTE_23.2.A.1.62

11/021/2015 14:21:19 - INFO - Closing TA partition

11/021/2015 14:21:19 - INFO - Start Flashing

11/021/2015 14:21:20 - INFO - Processing loader.sin

11/021/2015 14:21:20 - INFO - Checking header

11/021/2015 14:21:20 - INFO - Flashing data

11/021/2015 14:21:20 - INFO - Loader : S1_Root_9c84 - Version : MSM8974AB_7 / Boot version : S1_Boot_MSM8974AB_LA3.0_L_32 / Bootloader status : ROOTED

11/021/2015 14:21:20 - INFO - Max packet size set to 524288

11/021/2015 14:21:21 - INFO - Parsing boot delivery

11/021/2015 14:21:21 - INFO - Found a template session. Using it : C:\Users\Παύλος\.flashTool\mydevices\D65XX\default.fsc

11/021/2015 14:21:21 - INFO - Opening TA partition 2

11/021/2015 14:21:21 - INFO - Writing TA unit 00002774. Value : [01]

11/021/2015 14:21:21 - INFO - Closing TA partition

11/021/2015 14:21:21 - INFO - Processing partition.sin

11/021/2015 14:21:21 - INFO - Checking header

11/021/2015 14:21:21 - INFO - Flashing data

11/021/2015 14:21:21 - INFO - Opening TA partition 2

11/021/2015 14:21:21 - INFO - Processing dbi_S1_Boot_MSM8974AB_LA3_0_L_32_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID12-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin

11/021/2015 14:21:21 - INFO - Checking header

11/021/2015 14:21:21 - INFO - Flashing data

11/021/2015 14:21:21 - INFO - Processing emmc_appsboot_S1_Boot_MSM8974AB_LA3_0_L_32_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID09-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin

11/021/2015 14:21:21 - INFO - Checking header

11/021/2015 14:21:21 - INFO - Flashing data

11/021/2015 14:21:22 - INFO - Closing TA partition

11/021/2015 14:21:22 - INFO - Opening TA partition 2

11/021/2015 14:21:22 - INFO - Writing TA unit 0000084f. Value : [1A, CE, 28, 00, 01, 00, 06, 05, 00, 02, 02, 08, 00, 10, 03, 00, 02, 04, 02, 05, 00, 01, 03, 02, 00, 10, 05, 00, 03, 03, 05, 00, 10, 05, 00, 05, 83, 02, 00, 10, 02, 00, 05, 85, 0A, 00, 02, 00, A9, 09, BE, BA, A9, 09, 00, 00, 04, 00, 03, 00, 02, 00, 04, 00, 04, 00, B0, 04, 0E, 00, 06, 00, B8, 0B, 01, 4B, 00, 00, 00, 03, 96, 00, 2C, 01, 03, 00, 09, 00, 01]

11/021/2015 14:21:22 - INFO - Writing TA unit 000008fd. Value : [00]

11/021/2015 14:21:22 - INFO - Closing TA partition

11/021/2015 14:21:22 - INFO - Opening TA partition 2

11/021/2015 14:21:22 - INFO - Processing rpm_S1_Boot_MSM8974AB_LA3_0_L_32_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID0A-OEM1-AID4-DEBUG00_S1-RPMFW-LIVE-9C84-PID1-0005-MMC.sin

11/021/2015 14:21:22 - INFO - Checking header

11/021/2015 14:21:22 - INFO - Flashing data

11/021/2015 14:21:22 - INFO - Processing s1sbl_S1_Boot_MSM8974AB_LA3_0_L_32_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID65-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin

11/021/2015 14:21:22 - INFO - Checking header

11/021/2015 14:21:22 - INFO - Flashing data

11/021/2015 14:21:22 - INFO - Processing sbl1_S1_Boot_MSM8974AB_LA3_0_L_32_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID00-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin

11/021/2015 14:21:22 - INFO - Checking header

11/021/2015 14:21:22 - INFO - Flashing data

11/021/2015 14:21:22 - INFO - Processing tz_S1_Boot_MSM8974AB_LA3_0_L_32_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID07-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin

11/021/2015 14:21:22 - INFO - Checking header

11/021/2015 14:21:22 - INFO - Flashing data

11/021/2015 14:21:23 - INFO - Closing TA partition

11/021/2015 14:21:23 - INFO - Opening TA partition 2

11/021/2015 14:21:23 - INFO - Processing cache.sin

11/021/2015 14:21:23 - INFO - Checking header

11/021/2015 14:21:23 - INFO - Flashing data

11/021/2015 14:21:24 - INFO - Processing apps_log.sin

11/021/2015 14:21:24 - INFO - Checking header

11/021/2015 14:21:24 - INFO - Flashing data

11/021/2015 14:21:24 - INFO - Processing kernel.sin

11/021/2015 14:21:24 - INFO - Checking header

11/021/2015 14:21:24 - INFO - Flashing data

11/021/2015 14:21:26 - INFO - Processing fotakernel.sin

11/021/2015 14:21:26 - INFO - Checking header

11/021/2015 14:21:26 - INFO - Flashing data

11/021/2015 14:21:29 - INFO - Closing TA partition

11/021/2015 14:21:29 - INFO - Opening TA partition 2

11/021/2015 14:21:29 - INFO - Processing userdata.sin

11/021/2015 14:21:29 - INFO - Checking header

11/021/2015 14:21:29 - INFO - Flashing data

11/022/2015 14:22:11 - INFO - Processing system.sin

11/022/2015 14:22:11 - INFO - Checking header

11/022/2015 14:22:11 - INFO - Flashing data

11/024/2015 14:24:59 - ERROR - Processing of system.sin finished with errors.

11/024/2015 14:24:59 - INFO - Flashing finished.

11/024/2015 14:24:59 - INFO - Please unplug and start your phone

11/024/2015 14:24:59 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

So, I start the phone after the end of the process and it stuck at startup SONY XPERIA screen.

I've tried 3 different firmwares... And happen the same...

Any ideas?