Created Downgrade CDM to 2209 on FireFox (Windows) (markdown)

Downgrade-CDM-to-2209-on-FireFox-(Windows).md

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+## Locate CDM Install Folder
+- Open FireFox
+- Click the Menu
+
+![](https://i.imgur.com/5DWFRzc.png)
+
+- Click `Help`
+- Click `More troubleshooting information`
+- Locate the `Profile Folder` section
+- Click `Open Folder`
+
+![](https://i.imgur.com/6cMb1z7.png)
+
+- Click `Open file location`, This will open Windows Explorer
+- Close FireFox
+- Navigate to `gmp-widevinecdm`
+- Navigate to the `4.10.xxxx.x` folder
+
+## Overwrite CDM
+- Download Widevine CDM 2209: https://dl.google.com/edgedl/widevine-cdm/4.10.2209.0-win-x64.zip
+- Copy and replace the following files:
+  - widevinecdm.dll
+  - widevinecdm.dll.lib
+  - widevinecdm.dll.sig
+- You can now open FireFox
+
+Note: Don't replace the `manifest.json` file as this will cause FireFox to update the CDM