Empress Effects ZOIA
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Current Firmware
0541
Download the firmware .bin file from the product page and copy to the root of a FAT32 SD card. Note: Chrome may block .bin download — use Safari if needed.
Just for reference. For complete and up-to-date instructions, always refer to the manufacturer's official firmware page.
Firmware pageopens in a new tab — empresseffects.comFirmware History
Changelogs summarised from the manufacturer's release notes.
0541
2026-06-16
Updated the 1978 Plate factory patch by Christopher Jacques to V4 (patch 1 on ZOIA and 37 on Euroburo).
Release notesopens in a new tab — empresseffects.com
0532
2026-02-04
Significant reduction in sequencer module data size resolves previous patch-saving failures.
Resolution of a DSP increase introduced in version 4.00.
Fix for occasional screen unresponsiveness.
Elimination of crashes during sample rate conversion.
Enhanced rotary encoder responsiveness for BPM-mode rate controls, now supporting acceleration for rapid adjustments.
Note: Patches containing a sequencer that are saved on firmware version 4.20 (or later) will not load correctly on earlier firmware versions.
Release notesopens in a new tab — empresseffects.com
FAQ
What is the latest firmware for the Empress Effects ZOIA?
The latest firmware for the Empress Effects ZOIA is version 0541, released on 2026-06-16. FW//RADAR checks the manufacturer's official sources for new releases.
Where can I download Empress Effects ZOIA firmware?
Directly from Empress Effects's official firmware page — FW//RADAR links to the source and never hosts firmware files. Official firmware page →
Manufacturer page →opens in a new tab — empresseffects.com
Manual →opens in a new tab — empresseffects.com
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