Who can changing mac address for HUAWEI BM632w

[nobody nobodyan]

hi, Who can help me, im have a wimax modem(HUAWEI BM632w), I want change MAC addres but  Can not! I tried this method. But no result.
1. FIRST, OPEN RUN MENU BY PRESSING WIN KEY AND R..
2. ON DIALOG BOX.. TYPE TELNET
3. TYPE O THEN ENTER..
4. TYPE 192.168.1.1, LOGIN: wimax PASSWORD: wimax820
5. to change mac address.. ex: type setallmacaddr 00:25:99:6E:25:F2 enter

when i type setallmacaddr xx:xx:xx:xx:xx:xx , Answered: command failed!
Please help me.

[Surajdeen Oderinde]

Please i have same problem on how to change mac address in BM632w. I always get command failed. Please help. Thanks.