WARNING!!!!!!!!!!!!!
You should damage your phone in an irreparable way!!!In any case I am not responsable about information that you find in this site!!!
Here there is what information you can find:
Change the IMEI of your phone *(Warning:change IMEI of the phone is illegal.I am not responsable of the procedure,that is explained only for personal study)
Set some function of your phone that are normally disabled* **
Before to proceed I reccomand to you to make frame backup of your phone!!!!
* Tested on Startac85
** Tested on V3690