ZTE Z221 AT&T Unlocked done by Sigma Box
STATUS:
PROCEDURE:
- run SIGMA BOX software
- select QCOM platform
- power off phone with battery inside
- connect phone to pc using usb 5310 or ca-101 usb cable.
- install driver
- select ZTE handset diagnostic interface in SERIAL PORT (see in picture)
- then click DIRECT UNLOCK
UNLOCKED DONE
STATUS:
PROCEDURE:
- run SIGMA BOX software
- select QCOM platform
- power off phone with battery inside
- connect phone to pc using usb 5310 or ca-101 usb cable.
- install driver
- select ZTE handset diagnostic interface in SERIAL PORT (see in picture)
- then click DIRECT UNLOCK
UNLOCKED DONE
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