Today "sysupgrade -s" failed to fetch updated firmware: ===================== Verifying sets. Fetching updated firmware. fw_update: failed. Cannot fetch http://firmware.openbsd.org/firmware/7.5//SHA256.sig (404 Not Found) Upgrading. =====================
Seems it's looking for a 7.5 directory (-current apparently just moved to 7.5-beta) instead of the snapshot directory.