[Sony Xperia E3] NedqlkoHristov:
I had some problems with my device and I tried to flash it with cust-reset.ta included to see if it will fix it because flashing normally didn't..

Then my phone sort of bricked and now when I try to boot it or charge it the sony logo appears for like 0.5 sec and immediately powers off.

When I try to flash it normally [without cust-reset.ta] It doesn't flash it:

06/046/2016 11:46:04 - INFO - <- This level is successfully initialized

06/046/2016 11:46:05 - INFO - Flashtool Version 0.9.22.3 built on 08-06-2016 22:30:00

06/046/2016 11:46:05 - INFO - Executing search strategies to find proxy selector

06/046/2016 11:46:05 - INFO - No proxy found for IE. Trying next one

06/046/2016 11:46:05 - INFO - No proxy found for firefox. Trying next one

06/046/2016 11:46:05 - INFO - No proxy found for java. Trying next one

06/046/2016 11:46:05 - INFO - Syncing devices from github

06/046/2016 11:46:05 - INFO - Opening devices repository.

06/046/2016 11:46:06 - INFO - Scanning devices folder for changes.

06/046/2016 11:46:18 - INFO - Pulling changes from github.

06/046/2016 11:46:18 - INFO - Quietly closing devices repository.

06/046/2016 11:46:18 - INFO - Devices sync finished.

06/046/2016 11:46:18 - INFO - Loading devices database

06/046/2016 11:46:18 - INFO - Loaded 94 devices

06/046/2016 11:46:18 - INFO - Starting phone detection

06/046/2016 11:46:23 - INFO - Device disconnected

06/048/2016 11:48:09 - INFO - Selected Bundle for Sony Xperia E3(D2203). FW release : 18.5.C.0.25. Customization : Customized CE1

06/048/2016 11:48:09 - INFO - Preparing files for flashing

06/050/2016 11:50:59 - INFO - Please connect your device into flashmode.

06/051/2016 11:51:55 - INFO - Device connected in flash mode

06/051/2016 11:51:56 - INFO - Opening device for R/W

06/051/2016 11:51:56 - INFO - Reading device information

06/051/2016 11:51:58 - INFO - Phone ready for flashmode operations.

06/051/2016 11:51:58 - INFO - Opening TA partition 2

06/051/2016 11:51:58 - INFO - Start Flashing

06/051/2016 11:51:58 - INFO - Processing loader.sin

06/051/2016 11:51:58 - INFO - Checking header

06/051/2016 11:51:58 - INFO - Flashing data

06/052/2016 11:52:01 - INFO - Loader : S1_Root_f82d - Version : LOADER_RELEASE_MSM8X26_32_AID_4 / Boot version : / Bootloader status : NOT_ROOTABLE

06/052/2016 11:52:01 - INFO - Max packet size set to 512K

06/052/2016 11:52:01 - INFO - USB buffer size set to 512K

06/052/2016 11:52:10 - INFO - Parsing boot delivery

06/052/2016 11:52:11 - INFO - Found a template session. Using it : C:\Users\vicho\.flashTool\firmwares\prepared\default.fsc

06/052/2016 11:52:11 - INFO - Opening TA partition 2

06/052/2016 11:52:11 - INFO - Flashing finished.

06/052/2016 11:52:11 - INFO - Please unplug and start your phone

06/052/2016 11:52:11 - INFO - For flashtool, Unknown Sources and Debugging must be checked in phone settings

I don't know why it shows bootloader not rootable because I already have unlocked the bootloader..

Is my phone hardbricked? I am able to connect it in fastboot/flash mode.

I tried another usb port and another computer.

also tried another ftf and another flashtool version. Still nothing..