Huawei p6-u06 trying to repair imei always error

Hi team plz tell me what to do trying to fix imei but always give this error

Code:

SigmaKey v.2.14.03
537070155 Sigma dongle 2.14, Initializing...OK
Pack 1: Activated
Pack 2: Activated
--------- 2015-12-24 13:46:43 ---------
SigmaKey 2.14.03 ADB: Repair IMEI
* daemon not running. starting it now *
* daemon started successfully *
^ ROMaster Composite ADB Interface
Version: Linux version 3.0.8-00780-g62cb956 (android@localhost) (gcc version 4.6.x-google 20120106 (prerelease) (GCC) ) #1 SMP PREEMPT Wed Jul 31 21:46:21 CST 2013
Phone model: HUAWEI HUAWEI P6-U06
Android 4.2.2; Firmware: HuaweiP6-U06; Date: Wed Jul 31 21:42:03 CST 2013
Version: P6-U06V100R001C00B112
Baseband Processor: k3v2oem1
Reconnect phone and try another connection method.
--------- 2015-12-24 13:56:21 ---------
SigmaKey 2.14.03 HiSi: Repair IMEI
Connecting........Baseband Processor: Missing response from phone
--------- 2015-12-24 13:56:31 ---------
SigmaKey 2.14.03 HiSi: Repair IMEI
Connecting...Reboot phone and try again
--------- 2015-12-24 13:59:06 ---------
SigmaKey 2.14.03 HiSi: Repair IMEI
Connecting........Baseband Processor: Missing response from phone
--------- 2015-12-24 13:59:17 ---------
SigmaKey 2.14.03 HiSi: Repair IMEI
Connecting...Reboot phone and try again