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zoom-zt2

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Python script to install/remove effects from the Zoom G1Four pedal

zoom-zt2 is a tool for the Zoom G1 Four, by @mungewell. Open source under MIT, latest release v1.2.0 (May 2026), 129 stars on GitHub.

forZoom G1 Four·by@mungewell

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Download v1.2.0

zoom-zt2-v1.2.0.zip· 25 MB

MIT· mungewell/zoom-zt2·downloads come from the creator’s GitHub releases

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7 commits and 1 release in the last year
Activity · last 12 months
9 releases
  1. v1.2.0Get the party startedLatest1 file

    No particular improvements in the code.

    Adding some 'decode_effects.exe' and 'decode_presets.exe' utils to the Win32 binary/zip to assist working with the '.ZD2' files.

  2. v1.1.0Harvest Moon1 file

    Wrap up a few bug fixes with the MS-plus pedals, basic operation of the Gui app is the same. Some alterations to the command line app, improving the parameters/arguments for 'cleaner' operation.

  3. v1.0.0Plush Teddy1 file

    Add preliminary support for the 'new' MS-plus pedals.

    The GUI was extended with tick-boxes to include the 'ZIC' (Icon) and 'ZIR' (Impulse Response) which should be enable were appropriate. You can upload an effect without an icon, but the effect will not be labelled/named in library function on the pedal.

    Note: The MS-plus pedals use a different ID/Group schema than the G1Four/etc. It is not known whether effects are compatible between the different series.

    WARNING: There is no online resource for downloading MS-plus effects (zd2/icon/ir) files, a factory reset WILL NOT RESTORE removed/deleted files!

    Please take back-ups of anything you intend to remove/delete from the pedal.

  4. v0.6.0Halloween Candy Rush1 file

    Transition to ArgParse, and add new functionality to the command line tools. Most notable is the ability to install/uninstall ZD2 file directly with ZoomZT2,py using -I and -U flags.

  5. v0.5.0Summer Fun1 file

    Rolling in a few bug fixes, and adding the ability to delete files from the GUI app.

  6. v0.4.0Group 'AG_MODEL' for A1Four EffectsBeta1 file

    Adjustments to code to allow the use of A1Four effects with use a new Group 'AG_MODEL'.

  7. v0.3.02020 wrap upBeta1 file

    Clean up and wrap up of stuff left lying around on my hard disk.

  8. v0.2.0WxPython GUI1 file

    This project now has a GUI, WxPython script to simplify the Uploading of effects to the pedal.

    Other improvements to the underlying code mean that it can now be used as a module in other projects, and improve the command line options and functionality.

  9. v0.1.0Initial ReleaseBeta1 file

    Initial release of the project, with pre-built EXE for those who don't have/want Python installed.

    Known to work on G1Four, but hoped to work for others. There will be quirks in operation, tread lightly.