this old sony xperia cannot unlock by sigmakey

SigmaKey v.2.28.07
426871453 Sigma dongle 2.28, Initializing...OK
Pack 1: Activated
Pack 2: Activated
Pack 3: Not activated
--------- 2018-08-16 12:46:21 ---------
SigmaKey 2.28.07 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Sony so0107 ADB Interface Driver
Version: Linux version 3.4.0-perf (administrator@ubuntu-scm03) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Wed Apr 23 22:27:36 CST 2014
Phone model: Sony D2004
Android 4.3; Firmware: 20.0.A.1.27
Version: 20.0.A.1.27
Baseband Firmware: 8x10-BAAAANWZQ-104036-20
Baseband Processor: Qualcomm MSM 8610 (Flattened Device Tree)
Reading security block..........Unexpected response from the phone
--------- 2018-08-16 12:47:46 ---------
SigmaKey 2.28.07 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Sony so0107 ADB Interface Driver
Version: Linux version 3.4.0-perf (administrator@ubuntu-scm03) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Wed Apr 23 22:27:36 CST 2014
Phone model: Sony D2004
Android 4.3; Firmware: 20.0.A.1.27
Version: 20.0.A.1.27
Baseband Firmware: 8x10-BAAAANWZQ-104036-20
Baseband Processor: Qualcomm MSM 8610 (Flattened Device Tree)
Reading security block..........Unexpected response from the phone