Open the system hosts file
You only need one file path on macOS, and it stays the same on every guide run.
macOS Guide
macOS connects to Firefly through a simple hosts-file change.
The full job on macOS is simple: open the hosts file, add the two Firefly lines, save the file, flush DNS, and then launch Growtopia.
Uses /etc/hosts
Admin password required
DNS refresh included
Add both Firefly lines together
Both Growtopia domains must resolve to the same IP, so paste both lines as one block at the bottom.
Flush DNS before launching
Run the included Terminal command after saving so macOS stops caching the old destination.
macOS hosts-file route
Once both Growtopia domains point to the Firefly IP and DNS has been refreshed, Growtopia should open on the Firefly route.
Open the hosts file location
In Finder, use Go → Go to Folder and open the system path below.
/etc/hosts
Make an editable copy
Copy the hosts file to your Desktop or open it with elevated permissions. The goal is to safely add the Firefly mappings at the bottom.
Add the Firefly mappings
Paste these two lines at the end of the hosts file so both Growtopia domains resolve to Firefly. If you prefer, download the prepared text file first and copy from there.
103.150.227.49 www.growtopia1.com
103.150.227.49 www.growtopia2.com
Save and replace the original file
Move the updated file back into /etc/ and confirm the replacement. macOS will ask for your password if elevated access is needed.
Flush DNS and launch Growtopia
Run the command below in Terminal, then launch Growtopia.
sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder
Note: To return to the official server, remove the two Firefly lines from the hosts file and run the DNS flush command again.