This is a full release with a large number of new presets as well as a number of bug fixes
and improvements. Updated versions of the User, Presets and Algorithms Manuals are
included.
Since the installation of new software can cause unanticipated problems, it should NOT
be installed close to a performance, tour or important session.
Eclipse prior to this version can only read the FAT card format, and may hang if given a
card formatted as FAT32. Cards above 1GB tend to be formatted as FAT32. If using a
card to perform this update, you should either use a small card (256M or below), or reformat a larger card on a PC (not a Mac) and be sure to select FAT rather than FAT32.
This issue is resolved by this update (see Fixes below).
IMPORTANT: The installation of this software will erase all user presets created by
earlier versions. For this reason it is essential that you backup all user presets prior to
installation, either to a card or to a computer. If you use BLOCK COPY, do NOT try to
backup factory presets at the same time (see Fixes below).
When you first run this software, you will get a message saying that “Internal ram is
new” and asking if you want to clear and format it. You MUST answer “yes” to this
question. This will return the unit to Factory Defaults, so you may have to reconfigure
your Eclipse before further use.
New Presets: See Presets and Algorithm Manuals for more info
800-840
850-866
900-920
921-960
new reverbs and others
guitar Preamp/Amplifier Distortion
all the factory presets from the TimeFactor Stompbox
all the factory presets from the ModFactor Stompbox
Improvements:
MIDI latency has been reduced, and most operations are faster,
Pitch tracking on the pitchshifters has been improved.
MIDIclock performance has been improved.
The LEVELS/INPUT key has changed to a dual function I/O MODE allowing a
mixed mono output. When pressed, this toggles between INPUT and OUTPUT.
[...]
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Last checked 23 Oct 2026
What you get with a free account
An alert the day a new Eclipse firmware ships, by email, Telegram or push
Your whole rig in one place, with the version each device is on
Used and new Reverb prices for your gear
A public rig page to share, if you want one
The Eventide Eclipse is no longer made, but Eventide can still ship firmware for it and we keep checking the official download page. One message per release. No spam, no newsletter.
Two update methods available. (1) Compact Flash card: copy the extracted files to the root of a CF card (no subfolders), power down the Eclipse, insert the card, hold key '1' while powering on, wait for 'Programming Completed. Cycle Power'. (2) Serial cable (Windows only): connect a straight-through RS-232 cable and run the downloaded EXE. Units with older bootloader versions must first update the bootloader before updating the OS — check the included documentation for the correct sequence. After any OS update, accept the prompt to clear setups on first boot (presets are not erased, only LEVELS/SETUP options reset to defaults).
Changelogs summarised from the manufacturer's release notes.
4.0121 Oct 2009
Release notes for this version are listed above.
Eventide Eclipse firmware FAQ
What is the latest firmware for the Eventide Eclipse?
The latest firmware for the Eventide Eclipse is version 4.01, released on 21 Oct 2009. FW//RADAR last checked Eventide's official page on 23 Oct 2026.
How do I update the Eventide Eclipse?
Two update methods available. (1) Compact Flash card: copy the extracted files to the root of a CF card (no subfolders), power down the Eclipse, insert the card, hold key '1' while powering on, wait for 'Programming Completed. Full instructions on Eventide's official firmware page.
Where can I download Eventide Eclipse firmware and drivers?
Directly from Eventide's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →
Is the Eventide Eclipse still receiving firmware updates?
The Eventide Eclipse is discontinued: Eventide no longer makes it. The latest firmware we recorded is 4.01 from 21 Oct 2009. FW//RADAR keeps checking Eventide's official page, so a new release would show up here.