V1,V2, What´s the diference? :confused:

[femajocri]

Hi everybody!

I discovered that some programs works with V1, Other V2, and sometimes the same kind of phone works with both!

For example:

To unlock the Nokia 3510i sometimes it´s necessary to use the code with V1, sometimes with V2!
I didn't find out why!

Does anybody know why?

Thanks!