Updated 3.4 Apply & Update & Maintain (markdown)

3.4-Apply-&-Update-&-Maintain.md

@@ -15,6 +15,17 @@ If you are not using a new profile, we recommend running our [cleanup script](ht
 
 <sup>1</sup> To find your profile, open `about:support` and look for `Profile Folder` under `Application Basics`.
 
+#### 🟪 ESR USERS
+
+- 🔹 While it is recommended that users use the arkenfox release that matches their Firefox version, it isn't mandatory
+- 🔸 option one (recommended)
+   - Stick with the matching arkenfox version, and not use the updater. You would then need to;
+   - update the `user.js` manually once each ESR major release to match, as arkenfox will already be past that version
+   - append and update your overrides manually to the end of the user.js (and keep a copy)
+- 🔸 option one (keep on your toes)
+   - Use the updater (with the [`-esr` command](https://github.com/arkenfox/user.js/wiki/5.1-Updater-[Options]), and this will append your `user-overrides.js`.
+   - This may cause compatibility or protection issues, as arkenfox is designed per release: for example, moving from `RFP` to `FPP`. So the onus is on you.
+
 #### 🟪 UPDATE
 
 - 🔹 Run the updater