Millermatic & Multimatic Software | MillerWelds

Millermatic & Multimatic Software Updates

Download the most up-to date, innovative software solutions for your welder.

By downloading this update, you are agreeing to the Terms & Conditions set forth by Miller Electric Mfg. LLC.

It is possible that your Miller equipment may contain third-party software, including open source software.  Check the bottom portion of the EULA web page for any licensing information or notices pertaining to third-party software for your specific Miller equipment. 

Your right to use this software is conditioned on compliance with the EULA.

Millermatic & Multimatic Welders

Release Notes

In current update:

New Software Versions

  • User Interface - 58963
  • Weld Controller (Millermatic 255) - 58963
  • Weld Controller (Multimatic 255) - 58963
  • Weld Programs - 0x435E64EA


  • Defaulting FasTack to ON
  • Added support for stainless 98% Ar, 2 % CO2
  • Added support for silicon bronze
  • Updated stainless tri-mix pulse programs to allow slower wire speeds and improve low-end performance
  • Cut connection diagram time in half
  • Modified FCAW-G parameters to address customer feedback around minimum weld current


View previous update release notes

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