ZTE mf70 airtel unlock error 84

[pcl4211]

I buy 7 credits for zte mf70 AIRTEL india but during unlocking process it showing error code 84.My username is pcl4211 if unlocking is possible
give solution otherwise refund my money very soon.it showing-

Unlocking, "please wait ...
Security data error !
Error code 84
Security data error !
unlock failed !"

my username is pcl4211 and modem information is-

DC - Unlocker 2 Client 1.00.1381
Detecting modem :
selection :
manufacturer - ZTE modems
model - Auto detect (recommended)

Found Applications port COM3
Found Diagnostics port COM5

Found modem : MF70
Model : ZTE MF70
IMEI : 865401017294103
Firmware : BD_INATLMF70SECV1.0.0B02
Compile date / time : Apr 22 2014 22:16:35
Chipset : Qualcomm MSM8200A
NAND Flash : JSC_JSFAA9D2N
SIM Lock status : Locked (Card Lock)

User : pcl4211

[Valdemaras]

I buy 7 credits for zte mf70 AIRTEL india but during unlocking process it showing error code 84.My username is pcl4211 if unlocking is possible
give solution otherwise refund my money very soon.it showing-

Unlocking, "please wait ...
Security data error !
Error code 84
Security data error !
unlock failed !"

my username is pcl4211 and modem information is-

DC - Unlocker 2 Client 1.00.1381
Detecting modem :
selection :
manufacturer - ZTE modems
model - Auto detect (recommended)

Found Applications port COM3
Found Diagnostics port COM5

Found modem : MF70
Model : ZTE MF70
IMEI : 865401017294103
Firmware : BD_INATLMF70SECV1.0.0B02
Compile date / time : Apr 22 2014 22:16:35
Chipset : Qualcomm MSM8200A
NAND Flash : JSC_JSFAA9D2N
SIM Lock status : Locked (Card Lock)

User : pcl4211

MF70 airtel is not supported, refund completed.