Error 72 to unlock MF 29 Claro Chile

[tRiTiO]

Hello:

I have problems to unlock a Claro Chile MF 29 ZTE:

Ping test to router (192.168.0.1)... OK
Switching router to FTM mode... OK
FTM setup 1... OK
FTM setup 2... OK
FTM setup 3... OK
Activating FTM mode... OK
Waiting for router response... OK
Enabling router Diagnostics mode, please wait... OK
Assigned Diagnostics IP : 192.168.0.210
Reading modem IMEI... OK
Reading modem firmware version... OK
Reading Lock status... failed!

Readed modem info:

Router's Diagnostics IP : 192.168.0.210
CGMM name : Unknown ZTE router
IMEI : 355475040117389
Firmware : BD_MF260AV1.0.0B08
Firmware Build Date : Feb 20 2012 22:54:36

Error code = 72

Please, can help?, i already buy credit.

[Valdemaras]

Hello:

I have problems to unlock a Claro Chile MF 29 ZTE:

Ping test to router (192.168.0.1)... OK
Switching router to FTM mode... OK
FTM setup 1... OK
FTM setup 2... OK
FTM setup 3... OK
Activating FTM mode... OK
Waiting for router response... OK
Enabling router Diagnostics mode, please wait... OK
Assigned Diagnostics IP : 192.168.0.210
Reading modem IMEI... OK
Reading modem firmware version... OK
Reading Lock status... failed!

Readed modem info:

Router's Diagnostics IP : 192.168.0.210
CGMM name : Unknown ZTE router
IMEI : 355475040117389
Firmware : BD_MF260AV1.0.0B08
Firmware Build Date : Feb 20 2012 22:54:36

Error code = 72

Please, can help?, i already buy credit.

Is there unsupported operator's sim inserted in router during detect time?