USB MIDI / SYS EX
Install ETCH.
Create your own sound.
Select firmware, connect your FM1 and follow the verified USB-MIDI update process. Works in desktop Chrome or Edge.
01 / SELECT FIRMWARE
SHA-256 VERIFIED LOCALLYThe browser accepts only the verified official V15 SHA-256. Files are not uploaded anywhere.
AUTO uses a known compatible header when available. Device-side CHECK must approve the package.
20 ms DRAW controls with load-adaptive 40–140 ms waveform rebuild requests, DETAIL / SOFT / EDGE brushes and isolated keyboard auditioning. Existing sounds, projects and the FM-1_1500 identity remain supported.
Safety & compatibilityDetails about boot headers, backups and recovery
Experimental firmware. This release has not been fully qualified on physical FM1 hardware. Installation can make the device unusable. Keep a verified backup and an independently proven recovery method. The installer does not back up user data.
Cross-firmware compatibility. The source firmware must approve the package during its own CHECK stage. No failed CHECK is bypassed. For older ETCH FM-1_1038, AUTO uses the original V15 boot-header variant. Never force a mismatched header.
Stock restoration. Official V15 restoration requires the genuine, hash-verified V15 file and a functioning USB updater. It cannot recover a device whose updater is inaccessible.
Use a USB data cable and close other MIDI apps. Keep the FM1 connected until the installer verifies its reboot.
02 / DEVICE & PROGRESS
AC791N / USB MIDIPreparing...
EVENT LOG
READ-ONLY DEVICE CHECK only sends identity queries; it does not start any update or write to flash. A reboot between CHECK and FLASH is expected. If it reconnects to the old version instead of the OTA loader, the log records it. Save the log if an update fails.
A successful USB transfer is not enough. This installer reports success only after the FM1 restarts and returns the exact expected firmware identity. Cross-firmware installation requests the normal device-side CHECK first; a failed CHECK is never bypassed.