Help! Unlock 6103

Hi,

Please, Help me to unlock this phone:

Model: 6103b
Operator: T-mobile
Country: USA
IMEI: 359371006471348

The problem is that it's a gift of a friend of mine. He bought it in Miami, but I am in Spain and I don't know which is the operator, "T-mobile", "T-mobile Florida" or "T-mobile Tampa Florida"

I have tested this codes with no success:
#pw+905992227426330+7#
#pw+906382227426330+7#

I don't know how many tries has this mobile phone (3 or 5?)

Any help will be great
Thx in advance

 

#pw+085453001354472+1#

 

NO success! Thanks for the code
Any idea?
When i put the code it says "not allowed"

thx

 

I am not sure the phone( if unlcoked) will work in Spain as the frequencies might not match. Make sure its a quad band phone to gurantee function in SPAIN or atleast a triband with one matching frequency from spain's cellphone provider.