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Line 6 DL4 MkII firmware

Line 6 active Device launched 2022
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Latest firmware

1.10
released 8 Oct 2024

What's new in 1.10

DL4 MkII 1.10 (released 8. October 2024) includes important bug fixes, and is recommended for all users of DL4 MkII and DL4 MkII 25th Anniversary Limited Edition. NEW FEATURES New Global Setting—Tap Pitch With certain delay types, adjusting delay time via Tap Tempo generates cool pitch artifacts; this behavior is accurate to the original gear. However, you can now set DL4 MkII to minimize these artifacts for more transparent tempo changes: Hold ALT/LEGACY and press TAP to enter Global Settings. Turn the model encoder to PITCH ECHO. Press ALT/LEGACY to select the desired setting: Authentic (Red, default)—Pitch artifacts are heard during tempo changes, such as heard on vintage tape and mechanical echo machines Transparent (White)—Tempo changes are more transparent and pitch artifacts are minimized Press any footswitch to exit Global Settings. New Global Setting—LED Ring Brightness When a preset is bypassed, you may now choose whether the LED ring is dim or off: Hold ALT/LEGACY and press TAP to enter Global Settings. Turn the model encoder to GLITCH. Press ALT/LEGACY to select the desired setting: Off/Bright (Red)—The LED is off when bypassed and bright when enabled (This is the same as the original DL4) Dim/Bright (White, default)—The LED is dim when bypassed and bright when enabled Press any footswitch to exit Global Settings. Euclidean Delay—16 Steps Euclidean Delay now supports a 16-step (was 8-step) sequence for more flexibility, which is the same range as in Helix. REPEATS controls the overall number of repeats heard for the entire sequence. If you want to hear all fills in the sequence only once, set this to 0% TWEAK adjusts the number of total Steps (from 1 to 16) to be filled in by the TWEEZ KNOB TWEEZ adjusts Fill, which is the number of echoes heard within the number of selected steps TIP: To more easily hear the results of your changes, try sustaining a chord while adjusting the TWEAK and TWEEZ knobs. CHANGES [...]

Last checked 27 Oct 2026

Release notes on kb.line6.com ↗

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How to update the Line 6 DL4 MkII

Update via Line 6 Central (free app for Mac and Windows). Connect the DL4 MkII to the computer via USB. Launch Line 6 Central, which detects the device and prompts for available firmware updates. Follow the on-screen instructions to complete the update.

What you need

Line 6 Central — the software Line 6 uses to load firmware onto the Line 6 DL4 MkII. 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 Line 6 DL4 MkII

The Line 6 DL4 MkII is updated with Line 6 Central, published by Line 6.

Download Line 6 Central from Line 6opens in a new tab — line6.com

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Line 6 DL4 MkII firmware update history

Changelogs summarised from the manufacturer's release notes.

1.108 Oct 2024

Release notes for this version are listed above.

Release notesopens in a new tab — kb.line6.com

Line 6 DL4 MkII firmware FAQ

What is the latest firmware for the Line 6 DL4 MkII?

The latest firmware for the Line 6 DL4 MkII is version 1.10, released on 8 Oct 2024. FW//RADAR last checked Line 6's official page on 27 Oct 2026.

How do I update the Line 6 DL4 MkII?

Update via Line 6 Central (free app for Mac and Windows). Connect the DL4 MkII to the computer via USB. Full instructions on Line 6's official firmware page.

What software do I need to update the Line 6 DL4 MkII?

You need Line 6 Central, available from line6.com.

Where can I download Line 6 DL4 MkII firmware and drivers?

Directly from Line 6's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →

Where can I find the Line 6 DL4 MkII manual?

The official Line 6 user manual is a PDF hosted on line6.com. Line 6 DL4 MkII user manual (PDF) →

Is the Line 6 DL4 MkII still receiving firmware updates?

The last firmware release we recorded is 1.10 from 8 Oct 2024. FW//RADAR still checks Line 6's page daily.

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