For anyone getting connection errors while using the final mod from MasterJ, try either:
1. Adding the BraveFrontierFinalMod to trusted files if your antivirus allows such a thing. (like Comodo)
2. Disabling the antivirus for the time being.
3. Disabling the firewall.
4. If you don't want to disable the firewall, try the method Ionasoru and hashl007 mentioned:
Only for windows:
a. Go to your control panel.
b. Go to system and security or something of the sort.
c. Go to windows firewall.
d. Go to allow an app or feature through firewall and I'm guessing you choose one (the final mod).
It should work after that. For me, Comodo blocked the .exe so the connection wouldn't get through. Hope you guys get it working! Make sure to turn back on your antivirus and firewall when you're done.
Also, make sure to download the BraveFrontierFinalMod.exe from http://element-evil.com/forum/public-hacks-mods-11/%5B-hack-%5D-brave-frontier-ios-autohack-4274/ first.