I have Sprint and was going to go today to get a new phone. Is there a particular firmware version i should look for ? Or is there a range of firmwares i can check for to make sure i will be able to root it when i get home? i def want to be able to root my new phone but last time when i got my new s8 ans s9 the firmwares were pre updated and i was unable to root either of them. Thanks in advance for any help!