Unlocking TATA DOCOMO ZTE MF631 (3G stick with 7.2 mbps)

Plug your 3G stick

install drivers and software

Exit from your TATA DOCOMO dashboard

Download DC-UNLOCKER (pre-patched) from here  .

open dccrap.exe.

Click UNLOCK
(automatically highlighted after you see sim status locked)

now re-insert the 3G stick with any sim (except docomo)

select network manually (only once)

CONGRATULATION !!!! you are done