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 .idea
 .DS_Store
 .vscode
+*.zip
+__pycache__/
diff --git a/README.md b/README.md
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@@ -14,7 +14,7 @@ See [crosspoint_reader/README.md](crosspoint_reader/README.md) for protocol deta
 
 ## Installation
 
-Download the latest release from the [releases page](https://github.com/crosspoint-reader/calibre-plugins/releases), then in Calibre: **Preferences > Plugins > Load plugin from file**.
+Download the latest release ZIP from the [releases page](https://github.com/crosspoint-reader/calibre-plugins/releases). Do not open or extract the ZIP; install the ZIP file itself in Calibre via **Preferences > Advanced > Plugins > Load plugin from file**.
 
 ## Development
 
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diff --git a/crosspoint_reader/README.md b/crosspoint_reader/README.md
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@@ -112,8 +112,8 @@ identity, then caches it. Most setups never need it — leave it off unless some
 library books still aren't marked.
 
 Install:
-1. Download the latest release from the [releases page](https://github.com/crosspoint-reader/calibre-plugins/releases) (or zip the contents of this directory).
-2. In Calibre: Preferences > Plugins > Load plugin from file.
+1. Download the latest release ZIP from the [releases page](https://github.com/crosspoint-reader/calibre-plugins/releases) (or zip the contents of this directory). Do not open or extract the ZIP; install the ZIP file itself.
+2. In Calibre: Preferences > Advanced > Plugins > Load plugin from file.
 3. The device should appear in Calibre once it is discoverable on the network.
 
 No configuration needed. The plugin auto-discovers the device via UDP and
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