hello my z30 apn is locked/grayed out i cant change it and when i open engineering window i type in it but it wont save . what should i to fix this i took it to a shop he said something about my so being lec /lek or something like that with a bad accent and wanted to charge a ridiculous amount of money to fix it , could some one please help me i really cant afford paying that guy im in school and moneys tight ?