1.7.x → 1.8.0 Ten minutes, start to finish, on an Apple Silicon Mac. Tick each step as you go — your progress is kept on this device only.
Step 1 Confirm this Mac is Apple Silicon Open › About This Mac. The Chip line must read Apple M1 or newer. If it reads an Intel processor, stop here — 1.8.0 is arm64 only and will not launch. Stay on 1.7.1. Step 2 Check macOS 11 Big Sur or newer Same About This Mac window. Older releases cannot verify the notarization ticket on the new build. Step 3 Export an encrypted vault backup In your current 1.7.x copy open Settings › Passwords › Export encrypted backup and save the .casement file somewhere safe. The upgrade keeps your vault in place, but a backup is the only recovery path if anything goes sideways. Store the passphrase in a password manager — it is never sent to us and cannot be reset. Step 4 Sign in and let sync finish Settings › Account & sync. If you sync favorites, history or vault items, wait for the last-synced timestamp to update before quitting, so nothing pending is left on the old install. Step 5 Quit Casement completely Casement › Quit Casement (⌘Q), not just closing the window. Replacing a running app is what produces a broken signature. osascript -e 'quit app "Casement"'Step 6 Install 1.8.0 Easiest route: Casement › Check for Updates in 1.7.x — the updater verifies the SHA-256 and swaps the app for you. Prefer doing it by hand? Download the signed DMG below and drag Casement into Applications, choosing Replace. Step 7 Launch with a normal double-click 1.8.0 is signed with a Developer ID certificate and notarized, so no right-click-to-Open and no Terminal step. If macOS still objects, the copy is a leftover download rather than the new build — delete it and re-download. Step 8 Clear leftovers from the old unsigned build (optional) If you previously stripped the quarantine flag by hand, nothing needs undoing. But do remove any older Casement copies from Applications and the Downloads folder so the Keychain seals the vault to a single signed app. xattr -dr com.apple.quarantine /Applications/Casement.appStep 9 Verify the signature and version Casement › About Casement should read 1.8.0. For a belt-and-braces check, confirm the code signature in Terminal — it should report Developer ID Application. codesign -dv --verbose=4 /Applications/Casement.appStep 10 Re-check extensions and settings Settings › Extensions should list what you had before. Privacy toggles, the assistant allowlist, the download folder and your theme all carry over — glance over them once and you're done. If something goes wrong Panels stuck open on the old build, a Gatekeeper dialog, or a vault that will not unlock — the support page lists each error with its fix, and install help walks through first launch in detail.