[Xperia Z1 Q&A, Help & Troubleshooting] TagEHeuer:
I recently upgraded to 4.3 through the update centre. Wanted to keep root so decided to flash the phone again back to .534, used flash tool everything went fine, and now it just keeps restarting. Goes on the colourful load up screen and then freezes and restarts. What to do? :silly:

It keeps restarting, I can't even turn it off. Just keeps turning on, going through start up then turning off..

27/025/2013 15:25:54 - INFO - <- This level is successfully initialized

27/025/2013 15:25:54 - INFO - Flashtool Version 0.9.13.0 built on 2013-06-04 22:50:00

27/026/2013 15:26:00 - INFO - Device disconnected

27/026/2013 15:26:09 - INFO - Device connected in flash mode

27/026/2013 15:26:26 - INFO - Selected C6903 / 14.1.G.1.534 / 1276-4314_R2A

27/026/2013 15:26:26 - INFO - Preparing files for flashing

27/027/2013 15:27:10 - INFO - Device disconnected

27/027/2013 15:27:19 - INFO - Please connect your device into flashmode.

27/027/2013 15:27:23 - INFO - Device connected with USB debugging off

27/027/2013 15:27:23 - INFO - For 2011 devices line, be sure you are not in MTP mode

27/027/2013 15:27:34 - INFO - Device disconnected

27/027/2013 15:27:55 - INFO - Device connected in flash mode

27/027/2013 15:27:56 - INFO - Opening device for R/W

27/027/2013 15:27:56 - INFO - Reading device information

27/027/2013 15:27:56 - INFO - Phone ready for flashmode operations.

27/027/2013 15:27:56 - INFO - Current device : C6903 - BH90748Z06 - 1276-4314_R1B - 1274-8313_14.2.A.0.290 - EURO-LTE_14.2.A.0.290

27/027/2013 15:27:56 - INFO - Start Flashing

27/027/2013 15:27:56 - INFO - Processing loader.sin

27/027/2013 15:27:56 - INFO - Checking header

27/027/2013 15:27:56 - INFO - Flashing data

27/027/2013 15:27:57 - INFO - Loader : S1_Root_6732 - Version : MSM8974_23 / Boot version : S1_Boot_MSM8974_LA1.04_15 / Bootloader status : ROOTABLE

27/027/2013 15:27:57 - INFO - Processing partition-image.sin

27/027/2013 15:27:57 - INFO - Checking header

27/027/2013 15:27:57 - INFO - Flashing data

27/027/2013 15:27:57 - INFO - Processing kernel.sin

27/027/2013 15:27:57 - INFO - Checking header

27/027/2013 15:27:57 - INFO - Flashing data

27/027/2013 15:27:59 - INFO - Processing rpm.sin

27/027/2013 15:27:59 - INFO - Checking header

27/027/2013 15:27:59 - INFO - Flashing data

27/027/2013 15:27:59 - INFO - Processing fotakernel.sin

27/027/2013 15:27:59 - INFO - Checking header

27/027/2013 15:27:59 - INFO - Flashing data

27/028/2013 15:28:01 - INFO - Processing amss_fs_2.sin

27/028/2013 15:28:01 - INFO - Checking header

27/028/2013 15:28:01 - INFO - Flashing data

27/028/2013 15:28:01 - INFO - Processing amss_fs_1.sin

27/028/2013 15:28:01 - INFO - Checking header

27/028/2013 15:28:01 - INFO - Flashing data

27/028/2013 15:28:01 - INFO - Processing amss_fsg.sin

27/028/2013 15:28:01 - INFO - Checking header

27/028/2013 15:28:01 - INFO - Flashing data

27/028/2013 15:28:01 - INFO - Processing system.sin

27/028/2013 15:28:01 - INFO - Checking header

27/028/2013 15:28:01 - INFO - Flashing data

27/031/2013 15:31:59 - INFO - Processing elabel-C6903-row_201309181800.1_14.1.G.1.534.sin

27/031/2013 15:31:59 - INFO - Checking header

27/031/2013 15:31:59 - INFO - Flashing data

27/032/2013 15:32:02 - WARN - This file is ignored : simlock.ta

27/032/2013 15:32:02 - INFO - Ending flash session

27/032/2013 15:32:02 - INFO - Flashing finished.

27/032/2013 15:32:02 - INFO - Please unplug and start your phone

27/032/2013 15:32:02 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings