I got a brick for the Sony Z3 Dual (D6633) with the kernel firmware using flashtool. I collected a file for S1tool, but there is no positive result. The s1tool log:
SELECT FIRMWARE PACKAGES YOU CAN SELECT SEVERAL PACKAGES WITH CTRL BUTTON CHECKING PACKAGES ...
DETACH USB CABLE FROM PHONE REMOVE BATTERY FROM PHONE ATTACH TESTPOINT PRESS "READY", THEN ATTACH USB CABLE TO PHONE
will use Sahara protocol ... REMOVE TESTPOINT NOW, THEN PRESS "READY"
PROCESSING ... SERIAL NUMBER : E681FF0B HARDWARE ID 04000100E1407B00 NOT SUPPORTED HARDWARE ID : 04000100E1407B00 NOT SUPPORTED HASH :CF19D6FAD8029B66B15246BF3C9D216FC1D2235D87706E0458C7125BB1E436EC Elapsed:35 secs.