(I named my rom "Nexboost" by the way - AOSP experience - Nexus Xboost -> Nexboost)
Do I have to ask @Xmoose - the developer of Xboost rom for permission because I use Xboost as my base rom? I did ask him about a month ago, but he didn't reply. He wasn't active lately. (Maybe he left the forum?)
Or, can I just upload my rom without asking him for permission, as long as I include him in the credits?