How to change "launchctl limit maxfiles"

You can change it as follows:

$ launchctl limit maxfiles
maxfiles    256            unlimited    
$ sysctl kern.maxfiles
kern.maxfiles: 12288
$ sudo vi /Library/LaunchDaemons/limit.maxfiles.plist

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN"
        "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
  <dict>
    <key>Label</key>
    <string>limit.maxfiles</string>
    <key>ProgramArguments</key>
    <array>
      <string>launchctl</string>
      <string>limit</string>
      <string>maxfiles</string>
      <string>65535</string>
      <string>65535</string>
    </array>
    <key>RunAtLoad</key>
    <true/>
    <key>ServiceIPC</key>
    <false/>
  </dict>
</plist>

$ launchctl load -w /Library/LaunchDaemons/limit.maxfiles.plist
$ launchctl limit maxfiles
maxfiles    256            unlimited    
$ sudo launchctl load -w /Library/LaunchDaemons/limit.maxfiles.plist
$ launchctl limit maxfiles
maxfiles    65535          65535    
$ sysctl kern.maxfiles
kern.maxfiles: 65535
$

Note loading the configuration without "sudo" didn't work.

Reference:
https://blog.dekstroza.io/ulimit-shenanigans-on-osx-el-capitan/