hi, had some trouble updating this on linux (arch). tried with latest standard-chrome and ungoogled-chromium.
got the following error and a red button:
write error {"slice":{"0":51,"1":177,"2":2,"3":35,"4":35,"5":113,"6":0,"7":32,"8":32,"9":97,"10":1,"11":35,"12":35,"13":113,"14":16,"15":189,"16":67,"17":113,"18":254,"19":247,"20":209,"21":254,"22":244,"23":231,"24":1,"25":32,"26":112,"27":71,"28":112,"29":181,"30":4,"31":70,"32":13,"33":70,"34":17,"35":70,"36":4,"37":154,"38":64,"39":121,"40":1,"41":40,"42":107,"43":208,"44":1,"45":32,"46":96,"47":113,"48":2,"49":32,"50":32,"51":113,"52":0,"53":45,"54":49,"55":209},"seq":345}
after powering off/on my module was detected as
Gliss MIDI 1 (Gliss-flasher-v1.1) �����������������������
tried updating to v1.1 and v2.0.1 with different error messages:
write error {"slice":{"0":27,"1":81,"2":38,"3":25,"4":0,"5":192,"6":13,"7":83,"8":38,"9":81,"10":28,"11":20,"12":40,"13":81,"14":27,"15":28,"16":39,"17":118,"18":36,"19":122,"20":48,"21":191,"22":215,"23":80,"24":255,"25":60,"26":33,"27":128,"28":192,"29":17,"30":52,"31":36,"32":118,"33":36,"34":52,"35":35,"36":14,"37":35,"38":0,"39":52,"40":34,"41":14,"42":34,"43":0,"44":52,"45":33,"46":127,"47":80,"48":0,"49":83,"50":37,"51":83,"52":38,"53":1,"54":16,"55":83},"seq":38}
write error {"slice":{"0":23,"1":75,"2":195,"3":98,"4":0,"5":35,"6":3,"7":99,"8":32,"9":34,"10":128,"11":248,"12":65,"13":32,"14":128,"15":248,"16":66,"17":48,"18":67,"19":99,"20":17,"21":240,"22":4,"23":15,"24":19,"25":208,"26":3,"27":104,"28":90,"29":106,"30":67,"31":106,"32":26,"33":112,"34":67,"35":106,"36":1,"37":51,"38":67,"39":98,"40":3,"41":141,"42":83,"43":177,"44":1,"45":59,"46":3,"47":133,"48":67,"49":141,"50":155,"51":178,"52":1,"53":59,"54":155,"55":178},"seq":470}
then switched to a windows machine with latest chrome and there it worked fine.
quite depressing to be dependent on microsoft and google here ;-(