Question [Q] Codes not working

Hello.

I'd been trying to dial these codes but nothing happens.

##626# or ##626* or ##626

Also ##000000# (default) and wont do anything either.

I was on 4.0.4 but since these codes weren't working, I decided to go back to Stock.
I'm currently on 2.3.5 but these codes doesn't work on this version either.

Those codes are important, because I'm trying to activate it with a new number.
But the carrier says that if they don't get the menu from those codes, they can't.

Before I got back to Stock, I had my PRL for this carrier (Tricom) updated, got signal and everything.
Now I don't have signal but that's not a problem since I can put it again.

I would like to know how to make them work.

Thanks in advance.