Connecting your GP-200

Click CONNECT on the landing screen or in the top bar (Chrome/Edge only). A short handshake reports your firmware; an unsupported firmware raises a compatibility warning. On connect, the unit's current preset loads into the editor automatically.

From then on, every edit (toggles, effect swaps, knob turns, reorders) streams to the device live, so the board is a real-time remote for the pedal. The top bar shows a connection dot, the current slot, firmware, and a SYNC counter while pushing. Changes you make on the hardware flow back into the editor too.

About the firmware warning

The preset format has only been verified against firmware 1.8. If your unit reports anything else you will get a compatibility dialog before you can edit, because the byte layout of a patch is exactly the kind of thing a firmware update moves , and writing a misread layout back to the pedal is how presets get corrupted. You can dismiss the warning and continue at your own risk; export a full ZIP backup from the patch manager first if you do.

If the pedal isn't found

• Check the browser. Firefox and Safari do not implement Web MIDI at all, so there is nothing to fix there , use Chrome or Edge, on any of Windows, macOS, Linux, ChromeOS or Android.
• Check the cable. A surprising number of USB cables sold with pedals are charge-only and carry no data lines.
• Close the official editor. Most systems give one application exclusive access to a USB-MIDI port, so the unit will not appear here while Valeton's editor holds it open.
• Grant the permission prompt. Web MIDI asks once per site; if you dismissed it, clear the site permission and reload.