GSM-Forum - error unlock globetrotter express hspa

i had some modems to unlock . All was ok but one models is error

BOX II PLUS [SN: xxxxxxxxxxxxxxxxxxx]
Status : READY
Detected card:
Model : GlobeTrotter HSUPA Modem
Ver. : 2.8.0AHd (Date: Nov 9 2007, Time: 11:40:11)
Brand : Option N.V.
IMEI : 356301-01-208444-0
HDW : EE4383H01H
SIM Lock status: LOCKED. ( Network )

click unlock and

BOX II PLUS [SN: xxxxxxxxxxxxxxxxxx]
Status : READY
Detected card:
Model : GlobeTrotter HSUPA Modem
Ver. : 2.8.0AHd (Date: Nov 9 2007, Time: 11:40:11)
Brand : Option N.V.
IMEI : 356301-01-208444-0
HDW : EE4383H01H
SIM Lock status: UNKNOW.
( Try Insert different Sim Card without PIN )
ERROR: [12].MISSING or INCORRECT NCK.