Moog Little Phatty firmware

Moog discontinued Device launched 2006

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Discontinued · Latest firmware

3.21

released 26 Feb 2014

Download firmware from moogmusic-help.freshdesk.com · needs PhattyLoader

Moog no longer makes the Little Phatty. No firmware update since February 2014.

Updater: PhattyLoader
Manual: User manual (PDF)

What's new in 3.21

Bugfix update. Note Calibration would not tune all octaves if Local Control was off; also removed Local Control: “noKB” option from the Slim Phatty (which has no keyboard).

Last checked 22 Oct 2026

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The Moog Little Phatty is no longer made, but Moog can still ship firmware for it and we keep checking the official download page. One message per release. No spam, no newsletter.

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Moog Little Phatty manual & official pages

Moog Little Phatty user manual (PDF)opens in a new tab — cdn.inmusicbrands.com
Download Moog Little Phatty firmware from Moogopens in a new tab — moogmusic-help.freshdesk.com

How to update the Moog Little Phatty

Follow Moog's Little Phatty / Slim Phatty firmware update article. Older units may first need the separate intermediate update attached to that article. Download PhattyLoader for Mac or Windows from the links in the article. Switch the Little Phatty off, hold MASTER while switching it on, and press PRESET when the display asks 'Update Firmware? PRESET=Yes' (this erases the current firmware); the display then shows 'Please Send Firmware'. Connect USB, or your MIDI interface's MIDI OUT to the Phatty's MIDI IN. In PhattyLoader choose the MIDI output under Device, open the Little Phatty .hex firmware file with File > Open and click Update Firmware; the display counts the received records. When the Phatty reboots, switch it off and on again before using MIDI. Moog's downloads page does not currently offer the Little Phatty firmware file (only the Slim Phatty one): ask Moog support for it.

What you need

PhattyLoader — the software Moog uses to load firmware onto the Moog Little Phatty. Download links below.

Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.

Drivers & software for the Moog Little Phatty

The Moog Little Phatty is updated with PhattyLoader, published by Moog.

Download PhattyLoader from Moogopens in a new tab — moogmusic-help.freshdesk.com

Moog Little Phatty firmware update history

Changelogs summarised from the manufacturer's release notes.

3.2126 Feb 2014

Release notes for this version are listed above.

Release notesopens in a new tab — moogmusic-help.freshdesk.com

Moog Little Phatty firmware FAQ

What is the latest firmware for the Moog Little Phatty?

The latest firmware for the Moog Little Phatty is version 3.21, released on 26 Feb 2014. FW//RADAR last checked Moog's official page on 22 Oct 2026.

How do I update the Moog Little Phatty?

Follow Moog's Little Phatty / Slim Phatty firmware update article. Older units may first need the separate intermediate update attached to that article. Full instructions on Moog's official firmware page.

What software do I need to update the Moog Little Phatty?

You need PhattyLoader, available from Moog's support site.

Where can I download Moog Little Phatty firmware and drivers?

Directly from Moog's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →

Where can I find the Moog Little Phatty manual?

The official Moog user manual is a PDF hosted on cdn.inmusicbrands.com. Moog Little Phatty user manual (PDF) →

Is the Moog Little Phatty still receiving firmware updates?

The Moog Little Phatty is discontinued: Moog no longer makes it. The latest firmware we recorded is 3.21 from 26 Feb 2014. FW//RADAR keeps checking Moog's official page, so a new release would show up here.

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