queries about bno to british passport

I have a permanent resident id card of hongkong bt i wasn't born here. Actually my mother was born here so hence the permanent residency. i also have a british nationals overseas (BNO) passport. i am thinking of changing bno to british passport and then migrate to UK. so i would like to know if i can apply for british passport by myself or is it that my mother has to get british passport first. I am 26. earlier when i checked in the net, someone told me that my parents have to first change to british passport then only i can have mine changed or the other way is i have to be 37 year old. is there any truth in it?? plz let me know.