I developed a handy GMX patch tool, that allows you to quickly patch the effect section of the GMX212 amp with some button presses on your computer. This little utility was totally customized for your GMX amp series. You can check it out here: http://www.hipergames.com/softohr.html

Thanks so much for providing this tool for GMX owners. I'll also get your URL added to the main Synth Zone listings over the next day, probably under Freeware & Shareware Utilities.