Firmware Update Instructions
To install firmware updates:
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Check the Serial Number of your ARP to ensure you have the correct version
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Download the relevant firmware package (above) and unzip it somewhere memorable on your PC or Mac
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Download the Teensy Loader
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Open the Teensy Loader

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Select File > Open HEX File
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Select the midicake.ARP.Firmware.ino.hex file downloaded in step 1, then click Open
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Make sure the (green) Auto button is selected
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Press the UPDATE button on the back of the unit (next to the USB port)
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ARP should restart within a couple of seconds with the new firmware
The firmware version number is displayed on the logo screen at startup and can be shown by holding the stop button.
Release Notes/Archive
v1.x.4.3392 - 18th July 2023
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DRONE mode
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6 new Modulation waveforms
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Modulation Toggle parameter
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Pitch Filter Parameter
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Note Lock Parameter
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Scale Lock Parameter
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Multi Menu display in SET Mode for all parameters
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Global tempo range increased, now 1 to 300 bpm
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Stop Button Behaviour added as new menu option
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Internal MIDI Clock to match external clock, supports Stop Button Behaviour
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Diagnostics options via connect application - for debugging
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FIXED - Note Limit ignoring Octave parameter
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FIXED - Crash on sending All Notes off to some MIDI Devices via USB Host
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FIXED - BIOS Menu display issue on restart
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FIXED - Set Mode CC update display issue
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FIXED - CC assignment display issue in set mode
v1.x.3.3210 - 5th June 2023
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BUG FIXES
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FIXED - Free Play notes not highlighted on exiting set mode
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FIXED - Free Play notes reset on exiting Chord Chain edit
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FIXED - Free play overrides chord selection when holding chord or macro or cc learn
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FIXED - Displaying incorrect display header and LEDs when exiting Chord Edit
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FIXED - Rare Crash during simultaneous gate length increase on multiple arps
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FIXED - Bounce and Repeat Sequence not changed/updated on load patch
v1.x.3.3096 - 31st March 2023
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Support for USB Host MIDI Thru and MIDI Out
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New "Note Limit" Parameter
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External Clock Tempo Detection
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"Live Play" toggle
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OMNI MIDI channel support
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Updated Global Menu
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Soft Reset and Diagnostic options
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Tweaks to improve Key Sync
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Fix - Missing MIDI Note Off in MONO voice mode
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Fix - Overlayed Edit label on Rhythm Length