basically, im gonna break it down like this. if you could unlock the firmware for this phone, you could unlock your own firmware... but either way it couldnt work because cdma is a completely different type of connection, its like trying to hack bluetooth with wifi firmware, two completely different types of signals. so either you have no idea what youre talking about, or youre trying to steal someones account info, either way its not gonna happen
sprint/boost/virgin use cdma, so that v9800 can NOT work on boost mobile, it is a gsm phone, it uses imei and a sim card, boost phones use cdma which is a meid and in the case of lte it has a sim but this particular phone has it embedded so it can never be changed out, and even if it could its not a gsm sim its an lte uim, there is a difference
so whatever youre trying to do, its not gonna work, youre gonna have to get over it