All the settings are hiding in developer mode. It's client side, so we can just bypass the login. Install [Charlesproxy.com and use this code:]
Code:
<?xml version='1.0' encoding='UTF-8' ?>
<?charles serialisation-version='2.0' ?>
<rewriteSet-array>
<rewriteSet>
<active>true</active>
<name>101 Developer Mode</name>
<hosts>
<locationPatterns>
<locationMatch>
<location>
<protocol>http</protocol>
</location>
<enabled>true</enabled>
</locationMatch>
</locationPatterns>
</hosts>
<rules>
<rewriteRule>
<active>true</active>
<ruleType>7</ruleType>
<matchValue>"is_super_user":0</matchValue>
<matchHeaderRegex>false</matchHeaderRegex>
<matchValueRegex>false</matchValueRegex>
<matchRequest>true</matchRequest>
<matchResponse>false</matchResponse>
<newValue>"is_super_user":1</newValue>
<newHeaderRegex>false</newHeaderRegex>
<newValueRegex>false</newValueRegex>
<matchWholeValue>false</matchWholeValue>
<caseSensitive>false</caseSensitive>
<replaceType>2</replaceType>
</rewriteRule>
<rewriteRule>
<active>true</active>
<ruleType>7</ruleType>
<matchValue>"super_admin":"0"</matchValue>
<matchHeaderRegex>false</matchHeaderRegex>
<matchValueRegex>false</matchValueRegex>
<matchRequest>true</matchRequest>
<matchResponse>false</matchResponse>
<newValue>"super_admin":"1"</newValue>
<newHeaderRegex>false</newHeaderRegex>
<newValueRegex>false</newValueRegex>
<matchWholeValue>false</matchWholeValue>
<caseSensitive>false</caseSensitive>
<replaceType>2</replaceType>
</rewriteRule>
<rewriteRule>
<active>true</active>
<ruleType>7</ruleType>
<matchValue>"develop_mode":0</matchValue>
<matchHeaderRegex>false</matchHeaderRegex>
<matchValueRegex>false</matchValueRegex>
<matchRequest>true</matchRequest>
<matchResponse>true</matchResponse>
<newValue>"develop_mode":1</newValue>
<newHeaderRegex>false</newHeaderRegex>
<newValueRegex>false</newValueRegex>
<matchWholeValue>false</matchWholeValue>
<caseSensitive>false</caseSensitive>
<replaceType>2</replaceType>
</rewriteRule>
</rules>
</rewriteSet>
</rewriteSet-array>
1. Open Charles
2. Menu: Tools>Rewrite
3. Import: 101-dev-mode.xml
4. Enable Rewrite: ticked
5. Hit OK
With that running, you can go into the router config and all the hidden menu items will be unlocked. Have fun!