Flash the Mellow FLY LLL Buffer Plus over USB with Katapult — no DFU jumper, no double-reset (which doesn't work on this board). The pyserial/klippy-env gotcha explained. Board-specific, hardware-tested.
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Updated
Aug 19, 2026 - Shell
Flash the Mellow FLY LLL Buffer Plus over USB with Katapult — no DFU jumper, no double-reset (which doesn't work on this board). The pyserial/klippy-env gotcha explained. Board-specific, hardware-tested.
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