Usage.md

@@ -120,17 +120,6 @@ OR
 onandroid --twrp --md5-disable
 ```
 
-<br />
-
-##### update.zip Generation
-* Example:
-```shell
-onandroid -z
-OR
-onandroid --update-zip
-```
-* Note: update.zip generation, not the update.zip itself, takes almost twice the size of a normal backup size, due to overhead during zip file creation. update.zip are not compressed, stored only.
-
 <br />
 <br />
 
@@ -142,4 +131,4 @@ onandroid -c MyBackup -r
 OR
 onandroid --custom MyBackup --replace
 ```
-* Note: This will only work with custom backup names and is not a true replace per se. Online Nandroid will first delete the old backup folder and create a new folder. Thus, if backup halts in the middle of it, for whatever reason, the backup may not be usable at all. So be careful about this flag.
+* Note: This will only work with custom backup names. This can be used to update a backup from a previous state, by way of using advanced backup mode in combination with this mode.
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