Boss GX-100
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Current Firmware
2.05
Update via USB mass storage (hold WRITE at power-on).
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 — boss.infoFirmware History
Changelogs summarised from the manufacturer's release notes.
2.05
2026-05-01
Bug Fix
The following bugs were fixed.
- The effect level of SHIMMER REVERB and SHIMMER DELAY is low.
(NOTE) Please adjust your memory if it bothers you because the effect level becomes louder if memories you created use these effects.
Release notesopens in a new tab — boss.info
2.04
2026-03-01
Removed the polyphonic tuner function. Fixed OUTPUT SELECT behavior when AMP is disabled. Corrected INT PDL TRIGGER malfunction in ASSIGN when set to MEM CHANGE. Multiple minor bug fixes.
Release notesopens in a new tab — boss.info
FAQ
What is the latest firmware for the Boss GX-100?
The latest firmware for the Boss GX-100 is version 2.05, released on 2026-05-01. FW//RADAR checks the manufacturer's official sources for new releases.
Where can I download Boss GX-100 firmware?
Directly from Boss'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 — boss.info
Manual →opens in a new tab — boss.info
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