Here is what was happening: when the LXR-02 was auto-detected via Web MIDI, it wasn’t getting populated in the select dropdown, and the modal attempted an automated handshake instead of guiding you to initiate the dump from the LXR panel.
Knob Monster runs on a serverless architecture, the monthly operating costs are near zero, meaning we can (and will) keep the servers alive indefinitely without commercial pressure.
Knob Monster is built on a modern serverless stack, meaning my monthly hosting and database costs are essentially zero. The platform is designed to run indefinitely with no financial overhead.
dezgeg is correct, MIDI has no hardware flow control pins. The synth's serial receiver chokes because the 8-bit CPU takes too long to write the SysEx buffer to SRAM.