Unlock ZTE MF975/Pocket WiFi 305ZT/303ZT Sprint Failed

[king17]

DC - Unlocker 2 Client 1.00.1441

Detecting modem :

selection :
manufacturer - ZTE modems
model - ZTE MF975/Pocket WiFi 305ZT/303ZT

Selected Applications port COM6
Selected Diagnostics port COM4

Found modem : MF975S
Model : ZTE MF975/Pocket WiFi 305ZT/303ZT
IMEI : 990003236432999
Firmware : 306ZTV1.0.0B16
Compile date / time : May 29 2015 15:03:03
Chipset : Qualcomm
NAND Flash : FM6BD4G2GA
SIM Lock status : Locked (Card Lock)

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Unlocking, please wait ...

Security data error !

Error code 84

Security data error !

unlock failed !

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[Valdemaras]

This error means that your device's firmware is not supported for the unlock.