[Xperia Z1 Q&A, Help & Troubleshooting] Torwald:
I have similar problem: Z1 Compact is stuck at Sony/Xperia logo.

I've tried flashing it with different ROMs without any success (downloaded them from Mega, torrents and via Flashtool).

This is log from last flashing:

25/052/2015 01:52:40 - INFO - Flashtool Version 0.9.19.8 built on 24-09-2015 22:00:00

25/052/2015 01:52:40 - INFO - Executing search strategies to find proxy selector

25/052/2015 01:52:40 - INFO - No proxy found for IE. Trying next one

25/052/2015 01:52:40 - INFO - No proxy found for firefox. Trying next one

25/052/2015 01:52:40 - INFO - No proxy found for java. Trying next one

25/052/2015 01:52:40 - INFO - Syncing devices from github

25/052/2015 01:52:40 - INFO - Scanning devices folder for changes.

25/052/2015 01:52:46 - INFO - Pulling changes from github.

25/052/2015 01:52:46 - INFO - Devices sync finished.

25/052/2015 01:52:51 - INFO - Device disconnected

25/053/2015 01:53:05 - INFO - Selected Bundle for Sony Xperia Z1 Compact (D5503). FW release : 14.6.A.0.368. Customization : Customized BAL

25/053/2015 01:53:05 - INFO - Preparing files for flashing

25/053/2015 01:53:27 - INFO - Please connect your device into flashmode.

25/053/2015 01:53:36 - INFO - Device connected in flash mode

25/053/2015 01:53:36 - INFO - Opening device for R/W

25/053/2015 01:53:36 - INFO - Reading device information

25/053/2015 01:53:36 - INFO - Phone ready for flashmode operations.

25/053/2015 01:53:36 - INFO - Opening TA partition 2

25/053/2015 01:53:36 - INFO - Current device : D5503 - CB5A1ZVU5G - 1281-3459_R3C - 1279-1792_14.4.A.0.157 - EURO-LTE_14.4.A.0.157

25/053/2015 01:53:36 - INFO - Closing TA partition

25/053/2015 01:53:36 - INFO - Start Flashing

25/053/2015 01:53:36 - INFO - Processing loader.sin

25/053/2015 01:53:36 - INFO - Checking header

25/053/2015 01:53:36 - INFO - Flashing data

25/053/2015 01:53:37 - INFO - Loader : S1_Root_6732 - Version : LOADER_RELEASE_MSM8974_32_AID_4 / Boot version : S1_Boot_MSM8974_Rhine1.3.1_LA1.04_16 / Bootloader status : ROOTED

25/053/2015 01:53:37 - INFO - Max packet size set to 512K

25/053/2015 01:53:37 - INFO - Making a TA backup

25/053/2015 01:53:37 - INFO - Opening TA partition 1

25/053/2015 01:53:37 - INFO - Start Dumping TA partition 1

25/053/2015 01:53:37 - INFO - Finished Dumping TA partition 1

25/053/2015 01:53:37 - INFO - TA partition 1 saved to C:\Users\Torwald\.flashTool\registeredDevices\CB5A1ZVU5G\s1ta\2015-10-24_01-53-37\1.ta

25/053/2015 01:53:37 - INFO - Closing TA partition

25/053/2015 01:53:37 - INFO - Opening TA partition 2

25/053/2015 01:53:37 - INFO - Start Dumping TA partition 2

25/053/2015 01:53:38 - INFO - Finished Dumping TA partition 2

25/053/2015 01:53:38 - INFO - TA partition 2 saved to C:\Users\Torwald\.flashTool\registeredDevices\CB5A1ZVU5G\s1ta\2015-10-24_01-53-37\2.ta

25/053/2015 01:53:38 - INFO - Closing TA partition

25/053/2015 01:53:38 - INFO - Parsing boot delivery

25/053/2015 01:53:38 - INFO - No flash script found. Using 0.9.18 flash engine

25/053/2015 01:53:38 - INFO - Opening TA partition 2

25/053/2015 01:53:38 - INFO - Writing TA unit 00002774. Value : [01]

25/053/2015 01:53:38 - INFO - Closing TA partition

25/053/2015 01:53:38 - INFO - Processing partition.sin

25/053/2015 01:53:38 - INFO - Checking header

25/053/2015 01:53:38 - INFO - Flashing data

25/053/2015 01:53:38 - INFO - Phone boot version : S1_Boot_MSM8974_Rhine1.3.1_LA1.04_16. Boot delivery version : S1_Boot_MSM8974_Rhine1.3.1_LA1.04_16

25/053/2015 01:53:38 - INFO - Boot delivery up to date. Nothing to do

25/053/2015 01:53:38 - INFO - Opening TA partition 2

25/053/2015 01:53:38 - INFO - Closing TA partition

25/053/2015 01:53:38 - INFO - Opening TA partition 2

25/053/2015 01:53:38 - INFO - Processing amss_fsg.sin

25/053/2015 01:53:38 - INFO - Checking header

25/053/2015 01:53:38 - INFO - Flashing data

25/053/2015 01:53:38 - INFO - Processing amss_fs_1.sin

25/053/2015 01:53:38 - INFO - Checking header

25/053/2015 01:53:38 - INFO - Flashing data

25/053/2015 01:53:38 - INFO - Processing amss_fs_2.sin

25/053/2015 01:53:38 - INFO - Checking header

25/053/2015 01:53:38 - INFO - Flashing data

25/053/2015 01:53:38 - INFO - Processing apps_log.sin

25/053/2015 01:53:38 - INFO - Checking header

25/053/2015 01:53:38 - INFO - Flashing data

25/053/2015 01:53:39 - INFO - Processing cache.sin

25/053/2015 01:53:39 - INFO - Checking header

25/053/2015 01:53:39 - INFO - Flashing data

25/053/2015 01:53:40 - INFO - Processing fotakernel.sin

25/053/2015 01:53:40 - INFO - Checking header

25/053/2015 01:53:40 - INFO - Flashing data

25/053/2015 01:53:41 - INFO - Processing kernel.sin

25/053/2015 01:53:41 - INFO - Checking header

25/053/2015 01:53:41 - INFO - Flashing data

25/053/2015 01:53:43 - INFO - Processing rpm.sin

25/053/2015 01:53:43 - INFO - Checking header

25/053/2015 01:53:43 - INFO - Flashing data

25/053/2015 01:53:43 - INFO - Closing TA partition

25/053/2015 01:53:43 - INFO - Opening TA partition 2

25/053/2015 01:53:43 - INFO - Processing system.sin

25/053/2015 01:53:43 - INFO - Checking header

25/053/2015 01:53:43 - INFO - Flashing data

25/058/2015 01:58:41 - INFO - Processing userdata.sin

25/058/2015 01:58:41 - INFO - Checking header

25/058/2015 01:58:41 - INFO - Flashing data

25/059/2015 01:59:17 - INFO - Closing TA partition

25/059/2015 01:59:17 - INFO - Opening TA partition 2

25/059/2015 01:59:17 - INFO - Flashing cust-reset.ta to partition 2

25/059/2015 01:59:17 - INFO - Writing TA unit 000008A4. Value : [00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00]

25/059/2015 01:59:17 - INFO - Flashing fota-reset.ta to partition 2

25/059/2015 01:59:17 - INFO - Writing TA unit 00000964. Value : [00]

25/059/2015 01:59:17 - INFO - Closing TA partition

25/059/2015 01:59:17 - INFO - Opening TA partition 2

25/059/2015 01:59:17 - INFO - Processing elabel.sin

25/059/2015 01:59:17 - INFO - Checking header

25/059/2015 01:59:17 - INFO - Flashing data

25/059/2015 01:59:19 - INFO - Closing TA partition

25/059/2015 01:59:19 - INFO - Opening TA partition 2

25/059/2015 01:59:19 - INFO - Writing TA unit 00002725. Value : [32, 30, 31, 35, 2D, 31, 30, 2D, 32, 35, 20, 30, 31, 3A, 35, 39, 3A, 31, 39, 00]

25/059/2015 01:59:19 - INFO - Writing TA unit 00002774. Value : [00]

25/059/2015 01:59:19 - INFO - Closing TA partition

25/059/2015 01:59:19 - INFO - Ending flash session

25/059/2015 01:59:19 - INFO - Flashing finished.

25/059/2015 01:59:19 - INFO - Please unplug and start your phone

25/059/2015 01:59:19 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

25/059/2015 01:59:20 - INFO - Device connected in flash mode

I'm fighting with this phone second day and nothing seems to help:

- I've even uninstalled PC Companion

- disconnected battery (after connecting to charger it finally showed battery symbol)

Only thing that is strange is lack of Green LED when plugging USB + Down button. It flashes Green and quickly goes out.

When I plug USB+Up and go Fastboot Mode it stays Blue...

Please, help me before I'll throw it against the wall...