[Xperia Z1 Compact Android Development] pcz:
Ok, thanks, I found this: https://www.androidfilehost.com/?a=show&w=files&flid=163069

But unfortunately the result are the same (as I tried before), just some flicker on the screen, and I cannot see any readable thing on it, just the hard shutdown helps to shut is down... I'll try your openbootloader...

So I tried, here is the log:

28/035/2017 20:35:12 - INFO - <- This level is successfully initialized

28/035/2017 20:35:14 - INFO - Flashtool Version 0.9.23.1 built on 11-01-2017 15:12:00

28/035/2017 20:35:14 - INFO - libusb version 1.0.20

28/035/2017 20:35:14 - INFO - Executing search strategies to find proxy selector

28/035/2017 20:35:14 - INFO - No proxy found for gnome. Trying next one

28/035/2017 20:35:14 - INFO - No proxy found for kde. Trying next one

28/035/2017 20:35:14 - INFO - No proxy found for firefox. Trying next one

28/035/2017 20:35:14 - INFO - Syncing devices from github

28/035/2017 20:35:14 - INFO - Opening devices repository.

28/035/2017 20:35:15 - INFO - Scanning devices folder for changes.

28/035/2017 20:35:22 - INFO - Pulling changes from github.

28/035/2017 20:35:22 - INFO - Quietly closing devices repository.

28/035/2017 20:35:22 - INFO - Devices sync finished.

28/035/2017 20:35:23 - INFO - Loading devices database

28/035/2017 20:35:23 - INFO - Loaded 98 devices

28/035/2017 20:35:23 - INFO - Starting phone detection

28/035/2017 20:35:26 - INFO - Device disconnected

28/036/2017 20:36:26 - INFO - Device connected in fastboot mode

28/037/2017 20:37:22 - INFO - Selected Bundle for Sony Xperia Z1 Compact(D5503). FW release : 1. Customization : openbootloader

28/037/2017 20:37:22 - INFO - Preparing files for flashing

28/037/2017 20:37:22 - INFO - Please connect your device into flashmode.

28/037/2017 20:37:29 - INFO - Device disconnected

28/037/2017 20:37:34 - INFO - Device connected in flash mode

28/037/2017 20:37:34 - INFO - Opening device for R/W

28/037/2017 20:37:34 - INFO - Device ready for R/W.

28/037/2017 20:37:34 - INFO - Reading device information

28/037/2017 20:37:34 - INFO - Phone ready for flashmode operations.

28/037/2017 20:37:34 - INFO - Opening TA partition 2

28/037/2017 20:37:34 - INFO - Current device : C6903 - CB5A21FGE2 - 1276-7951_R2D - 1272-6084_14.6.A.1.236 - GLOBAL-LTE_14.6.A.1.236

28/037/2017 20:37:34 - INFO - Closing TA partition

28/037/2017 20:37:34 - INFO - Start Flashing

28/037/2017 20:37:35 - INFO - No loader in the bundle. Searching for one

28/037/2017 20:37:35 - INFO - Processing loader.sin

28/037/2017 20:37:35 - INFO - Checking header

28/037/2017 20:37:35 - INFO - Flashing data

28/037/2017 20:37:35 - INFO - Loader : S1_Root_6732 - Version : MSM8974_23 / Boot version : S1_Boot_MSM8974_Rhine1.3.1_LA1.04_16 / Bootloader status : ROOTED

28/037/2017 20:37:35 - INFO - Max packet size set to 512K

28/037/2017 20:37:35 - INFO - USB buffer size set to 512K

28/037/2017 20:37:35 - INFO - No flash script found. Using 0.9.18 flash engine

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Writing TA unit 00002774. Value : 01

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Opening TA partition 2

28/037/2017 20:37:35 - INFO - Writing TA unit 00002725. Value : 32 30 31 37 2D 30 38 2D 32 38 20 32 30 3A 33 37 3A 33 35 00

28/037/2017 20:37:35 - INFO - Writing TA unit 00002774. Value : 00

28/037/2017 20:37:35 - INFO - Closing TA partition

28/037/2017 20:37:35 - INFO - Ending flash session

28/037/2017 20:37:36 - INFO - Flashing finished.

But with the recovery I have no success :(, the same happened. It looks like a resolution problem...