Boss firmware updates
14 devices tracked · 14 with a public firmware version · last release detected 1 Jul 2026.
| Device | Current firmware | Released | Status |
|---|---|---|---|
| Boss DD-500 firmware | 2.03 | 1 Feb 2022 | active |
| Boss ES-5 firmware | 2.03 | 1 Aug 2020 | active |
| Boss ES-8 firmware | 2.05 | 1 Aug 2020 | active |
| Boss GP-10 firmware | 1.10 | 7 Apr 2026 | discontinued |
| Boss GT-1000 firmware | 4.02 | 1 Jul 2026 | active |
| Boss GX-100 firmware | 2.05 | 1 May 2026 | active |
| Boss Katana MkII firmware | 2.00 | 1 Jul 2022 | active |
| Boss MD-500 firmware | 1.05 | 1 Sep 2024 | active |
| Boss RC-505 MkII firmware | 1.50 | 1 Jan 2025 | active |
| Boss RC-600 firmware | 1.50 | 1 Jan 2025 | active |
| Boss RE-202 Space Echo firmware | 1.10 | 1 Aug 2022 | active |
| Boss RV-500 firmware | 1.04 | 6 Apr 2026 | active |
| Boss SP-303 firmware | 1.02 | 8 Apr 2026 | discontinued |
| Boss SY-1000 firmware | 1.20 | 1 Apr 2025 | active |
Recent Boss firmware releases
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Boss GT-1000 firmware
Bug Fixes The following bugs were fixed. When switching patches without interrupting the sound, noise was produced under certain conditions.
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Boss GX-100 firmware
Bug Fix The following bugs were fixed. - The effect level of SHIMMER REVERB and SHIMMER DELAY is low.
- Boss SP-303 firmware
- Boss GP-10 firmware
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Boss RV-500 firmware
Delay sound does not sync with MIDI tempo clock when REVERB MODE is set to SPACE ECHO. (bug fix)
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Boss GX-100 firmware
Specification Change The following specification was changed. The polyphonic tuner function is removed.
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Boss GT-1000 firmware
Specification Change The following specification was changed. The polyphonic tuner function has been removed.
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Boss SY-1000 firmware
Change the specification The values that can be set for AUTO OFF are OFF / 20MIN / 10HRS, and the default value has been changed to "20MIN (20 minutes)". * For information on the Auto Off function, please refer to the [OWNER'S MANUALS].
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Boss RC-505 MkII firmware
Change the specification The values that can be set for AUTO OFF are OFF / 20MIN / 10HRS, and the default value has been changed to “20MIN (20 minutes)”. * For information on the Auto Off function, please refer to the [OWNER'S MANUALS].
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Boss RC-600 firmware
Change the specification The values that can be set for AUTO OFF are OFF / 20MIN / 10HRS, and the default value has been changed to “20MIN (20 minutes)”. * For information on the Auto Off function, please refer to the [OWNER'S MANUALS].
Also tracked (no user-updatable firmware)
20 Boss devices in the catalog with no firmware to update — kept for inventory, manuals and used-market info.
