[Xperia Z2 General] hisoka78:
i have this error when i need to downgrade

05/047/2014 19:47:27 - INFO - Flashtool Version 0.9.18.3 built on 10-20-2014 08:00:00
05/047/2014 19:47:27 - INFO - Executing search strategies to find proxy selector
05/047/2014 19:47:28 - INFO - No proxy found for IE. Trying next one
05/047/2014 19:47:28 - INFO - Strategy firefox failed trying next one : No Firefox installation found
05/047/2014 19:47:28 - INFO - No proxy found for java. Trying next one
05/047/2014 19:47:28 - INFO - Syncing devices from github
05/047/2014 19:47:28 - INFO - Scanning devices folder for changes.
05/047/2014 19:47:36 - INFO - Pulling changes from github.
05/047/2014 19:47:37 - INFO - Devices sync finished.
05/047/2014 19:47:43 - INFO - Device connected with USB debugging on
05/047/2014 19:47:43 - INFO - Connected device : Sony Xperia Z2
05/047/2014 19:47:43 - INFO - Installed version of busybox : N/A
05/047/2014 19:47:43 - INFO - Android version : 4.4.4 / kernel version : 3.4.0-perf-gd4d661a / Build number : 23.0.1.A.0.167
05/047/2014 19:47:59 - INFO - Selected Bundle for Sony Xperia Z2 (D6503). FW release : GLOBAL-LTE_17.1.2.A.0.314. Customization : Geneirc Kuwait customization 1281-2115
05/047/2014 19:47:59 - INFO - Preparing files for flashing
05/048/2014 19:48:52 - INFO - Please connect your device into flashmode.
05/049/2014 19:49:00 - INFO - Device disconnected
05/049/2014 19:49:21 - INFO - Device connected in flash mode
05/049/2014 19:49:21 - INFO - Opening device for R/W
05/049/2014 19:49:22 - INFO - Reading device information
05/049/2014 19:49:22 - INFO - Phone ready for flashmode operations.
05/049/2014 19:49:22 - INFO - Current device : D6503 - CB5A1Y8XUC - 1281-2117_R2B - 1278-4770_23.0.1.A.0.167 - GLOBAL-LTE_23.0.1.A.0.167
05/049/2014 19:49:22 - INFO - Start Flashing
05/049/2014 19:49:22 - INFO - Processing loader.sin
05/049/2014 19:49:22 - INFO - Checking header
05/049/2014 19:49:22 - INFO - Flashing data
05/049/2014 19:49:22 - INFO - Processing of loader.sin finished.
05/049/2014 19:49:23 - INFO - Loader : S1_Root_9c84 - Version : MSM8974AB_22 / Boot version : S1_Boot_MSM8974AB_LA3.0_55 / Bootloader status : ROOTABLE
05/049/2014 19:49:23 - INFO - Processing partition-image.sin
05/049/2014 19:49:23 - INFO - Checking header
05/049/2014 19:49:23 - INFO - Flashing data
05/049/2014 19:49:23 - INFO - Processing of partition-image.sin finished.
05/049/2014 19:49:23 - INFO - Parsing boot delivery
05/049/2014 19:49:23 - INFO - Phone boot version : S1_Boot_MSM8974AB_LA3.0_55. Boot delivery version : S1_Boot_MSM8974AB_LA2.0.1_43-A
05/049/2014 19:49:23 - INFO - Going to flash boot delivery
05/049/2014 19:49:23 - INFO - Processing emmc_appsboot_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID09-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin
05/049/2014 19:49:23 - INFO - Checking header
05/049/2014 19:49:23 - INFO - Flashing data
05/049/2014 19:49:23 - INFO - Processing of emmc_appsboot_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID09-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin finished.
05/049/2014 19:49:23 - INFO - Flashing Sirius_S1BootConfig_MiscTA.ta
05/049/2014 19:49:23 - INFO - Writing TA unit : [00, 00, 08, 4F, 00, 00, 00, 4E, 1A, CE, 1D, 00, 01, 00, 04, 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, 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]
05/049/2014 19:49:23 - INFO - Writing TA unit : [00, 00, 08, FD, 00, 00, 00, 01, 00]
05/049/2014 19:49:23 - INFO - Processing s1sbl_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID65-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin
05/049/2014 19:49:23 - INFO - Checking header
05/049/2014 19:49:23 - INFO - Flashing data
05/049/2014 19:49:23 - INFO - Processing of s1sbl_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID65-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin finished.
05/049/2014 19:49:23 - INFO - Processing sbl1_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID00-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin
05/049/2014 19:49:23 - INFO - Checking header
05/049/2014 19:49:24 - INFO - Flashing data
05/049/2014 19:49:24 - INFO - Processing of sbl1_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID00-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin finished.
05/049/2014 19:49:24 - INFO - Processing dbi_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID12-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin
05/049/2014 19:49:24 - INFO - Checking header
05/049/2014 19:49:24 - INFO - Flashing data
05/049/2014 19:49:24 - INFO - Processing of dbi_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID12-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin finished.
05/049/2014 19:49:24 - INFO - Processing rpm_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID0A-OEM1-AID4-DEBUG00_S1-RPMFW-LIVE-9C84-PID1-0005-MMC.sin
05/049/2014 19:49:24 - INFO - Checking header
05/049/2014 19:49:24 - INFO - Flashing data
05/049/2014 19:49:24 - INFO - Processing of rpm_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID0A-OEM1-AID4-DEBUG00_S1-RPMFW-LIVE-9C84-PID1-0005-MMC.sin finished.
05/049/2014 19:49:24 - INFO - Processing tz_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID07-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin
05/049/2014 19:49:24 - INFO - Checking header
05/049/2014 19:49:24 - INFO - Flashing data
05/049/2014 19:49:24 - INFO - Processing of tz_S1_Boot_MSM8974AB_LA2_0_1_43-A_AID_4_PLATFORM-MSM8974AB-LIVE-HWID007B80E1-SWID07-OEM1-AID4-DEBUG00_S1-BOOT-LIVE-9C84-0004-MMC.sin finished.
05/049/2014 19:49:24 - INFO - Processing kernel.sin
05/049/2014 19:49:24 - INFO - Checking header
05/049/2014 19:49:24 - INFO - Flashing data
05/049/2014 19:49:26 - INFO - Processing of kernel.sin finished.
05/049/2014 19:49:26 - INFO - Processing fotakernel.sin
05/049/2014 19:49:26 - INFO - Checking header
05/049/2014 19:49:26 - INFO - Flashing data
05/049/2014 19:49:28 - INFO - Processing of fotakernel.sin finished.
05/049/2014 19:49:28 - INFO - Processing amss_fs_2.sin
05/049/2014 19:49:28 - INFO - Checking header
05/049/2014 19:49:28 - INFO - Flashing data
05/049/2014 19:49:28 - INFO - Processing of amss_fs_2.sin finished.
05/049/2014 19:49:28 - INFO - Processing amss_fs_1.sin
05/049/2014 19:49:28 - INFO - Checking header
05/049/2014 19:49:28 - INFO - Flashing data
05/049/2014 19:49:28 - INFO - Processing of amss_fs_1.sin finished.
05/049/2014 19:49:28 - INFO - Processing amss_fsg.sin
05/049/2014 19:49:28 - INFO - Checking header
05/049/2014 19:49:28 - INFO - Flashing data
05/049/2014 19:49:28 - INFO - Processing of amss_fsg.sin finished.
05/049/2014 19:49:28 - INFO - Processing apps_log.sin
05/049/2014 19:49:28 - INFO - Checking header
05/049/2014 19:49:28 - INFO - Flashing data
05/049/2014 19:49:28 - INFO - Processing of apps_log.sin finished.
05/049/2014 19:49:28 - INFO - Processing cache.sin
05/049/2014 19:49:28 - INFO - Checking header
05/049/2014 19:49:28 - INFO - Flashing data
05/049/2014 19:49:29 - INFO - Processing of cache.sin finished.
05/049/2014 19:49:29 - INFO - Processing system.sin
05/049/2014 19:49:29 - INFO - Checking header
05/049/2014 19:49:29 - INFO - Flashing data
05/050/2014 19:50:19 - ERROR - Processing of system.sin finished with errors.
05/050/2014 19:50:19 - INFO - Ending flash session
05/050/2014 19:50:19 - ERROR - ERR_SEVERITY="MINOR";ERR_CODE="0017";ERR_DYNAMIC="80080053";
05/050/2014 19:50:19 - ERROR - Error flashing. Aborted
05/050/2014 19:50:19 - INFO - Device connected in flash mode
05/050/2014 19:50:19 - INFO - Device disconnected
05/050/2014 19:50:26 - INFO - Device connected in flash mode