Z3Compact didn't turn on and i can't use flashtool

Hi everybody

i am new user and i have z3 compact with rooted kitkat firmware 23.0.1.A.5.77
I had twrp recovery installed with XZDual recovery.

Today i have flashed the twrp 2.8.7 img from the recovery, maybe i've done error when i choosed flash in "boot kernel". The phone now is off and there is no possibility to turn on. If i try to turn on, i feel the vibration and stop.

i've thinked to use flashtool, but i've this error in flashmode when i try to flash a .ftf:
25/054/2015 12:54:34 - INFO - Start Flashing
25/054/2015 12:54:34 - INFO - Processing loader.sin
25/054/2015 12:54:34 - INFO - Checking header
25/054/2015 12:54:34 - INFO - Flashing data
25/054/2015 12:54:34 - INFO - Loader : S1_Root_9c84 - Version : MSM8974AB_22 / Boot version : S1_Boot_MSM8974AC_LA3.0_60 / Bootloader status : ROOTABLE
25/054/2015 12:54:34 - INFO - Max packet size set to 512K
25/054/2015 12:54:42 - INFO - Making a TA backup
25/054/2015 12:54:42 - INFO - Opening TA partition 1
25/054/2015 12:54:42 - INFO - Start Dumping TA partition 1
25/054/2015 12:54:42 - INFO - Finished Dumping TA partition 1
25/054/2015 12:54:42 - INFO - TA partition 1 saved to C:\Users\Home\.flashTool\registeredDevices\YT91121 70W\s1ta15-09-25_12-54-42.ta
25/054/2015 12:54:42 - INFO - Closing TA partition
25/054/2015 12:54:42 - INFO - Opening TA partition 2
25/054/2015 12:54:42 - INFO - Start Dumping TA partition 2
25/054/2015 12:54:42 - INFO - Finished Dumping TA partition 2
25/054/2015 12:54:42 - INFO - TA partition 2 saved to C:\Users\Home\.flashTool\registeredDevices\YT91121 70W\s1ta15-09-25_12-54-42.ta
25/054/2015 12:54:42 - INFO - Closing TA partition
25/054/2015 12:54:42 - INFO - Parsing boot delivery
25/054/2015 12:54:42 - INFO - Ending flash session
25/054/2015 12:54:42 - ERROR -
25/054/2015 12:54:42 - ERROR - Error flashing. Aborted

There is anyone can help me?Is this correct the procedure?
Thanks in advance