zte z933 unlock need help


trying to unlock this phone
i rooted with kingo root ( but seems like its temporary)
after it does the security backup and restarts, it loses root and now the IMEI is lost.
is there a better root method?
thanks

Quote:

SigmaKey v.2.16.00
408361457 Sigma dongle 2.16, Initializing…OK
Pack 1: Activated
Pack 2: Activated
——— 2016-04-16 14:44:35 ———
SigmaKey 2.16.00 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Android ADB Interface
Version: Linux version 3.4.0+ (xueyibing@zte1) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Sat Jun 21 11:02:30 CST 2014
Phone model: zte Z933
Android 4.3; Firmware: JLS36C; Date: Sat Jun 21 10:51:20 CST 2014
Version: Z933V1.0.0B03
Baseband Processor: Qualcomm MSM 8610 (Flattened Device Tree)
Reading data….Reconnect phone and try again
——— 2016-04-16 14:46:08 ———
SigmaKey 2.16.00 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Android ADB Interface
Version: Linux version 3.4.0+ (xueyibing@zte1) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Sat Jun 21 11:02:30 CST 2014
Phone model: zte Z933
Android 4.3; Firmware: JLS36C; Date: Sat Jun 21 10:51:20 CST 2014
Version: Z933V1.0.0B03
Baseband Processor: Qualcomm MSM 8610 (Flattened Device Tree)
Date: Jun 18 2014 02:13:32, May 27 2014 22:00:00, BAAAANAZ
Software IMEI: 86476602021xxxx
Security area saved to "C:\Users\Acer\Documents\SigmaKey\security backup476602021xxxx_zte_Z933_JLS36C.skb"
Obtain root privileges
——— 2016-04-16 14:59:31 ———
SigmaKey 2.16.00 ADB: Direct unlock
* daemon not running. starting it now *
* daemon started successfully *
^ Android ADB Interface
Version: Linux version 3.4.0+ (xueyibing@zte1) (gcc version 4.7 (GCC) ) #1 SMP PREEMPT Sat Jun 21 11:02:30 CST 2014
Phone model: zte Z933
Android 4.3; Firmware: JLS36C; Date: Sat Jun 21 10:51:20 CST 2014
Version: Z933V1.0.0B03
Please ROOT the phone first!