v1.18.0 (#815)

Co-authored-by: Artur Tamazian <artur-tamazian>
Co-authored-by: Javier Gonzalez <javierggt@yahoo.com>

INSTALL.md

@@ -15,11 +15,16 @@
 
 The easiest way to install is probably [brew](https://brew.sh/). Simply run `brew install katrain` and it will download and install the latest pre-built .app, and also install katago if needed.
 
-You can also find downloadable .app files for macOS [here](https://github.com/sanderland/katrain/releases). 
-Simply download, unzip the file, mount the .dmg and drag the .app file to your application folder, everything is included.
-The first time launching the application you may need to [control-click in finder to give permission for the 'unidentified' app to launch](https://support.apple.com/guide/mac-help/open-a-mac-app-from-an-unidentified-developer-mh40616/mac). This is simply a result of Apple charging $99/year to developers to be 'identified'.
+You can also find downloadable macOS installers [here](https://github.com/sanderland/katrain/releases). Recent releases include both Intel (`KaTrain-*-x86_64.dmg`) and Apple Silicon (`KaTrain-*-arm64.dmg`) installers, so download the one matching your Mac. Mount the `.dmg` and drag the `.app` to your Applications folder.
 
-Users with the last generation M1 macs with different architecture should then `brew install katago` in addition to this. KaTrain will automatically detect this KataGo binary.
+The first time you launch the app, macOS may block it as an app from an unknown developer.
+Follow Apple's current guide [here](https://support.apple.com/guide/mac-help/open-a-mac-app-from-an-unidentified-developer-mh40616/mac):
+1. Try opening the app once from Finder.
+2. Open `System Settings > Privacy & Security`.
+3. In the Security section, click `Open` and then `Open Anyway` for KaTrain.
+4. Enter your password to confirm.
+
+This is simply a result of Apple charging $99/year to developers to be 'identified'.
 
 ### <a name="MacCommand"></a>Command line install guide