Menu Lock / ToolBox Lock

Use Restrictions to lock the menu button via a password or a USB flash drive

Password:

1. Select Menu → Toolbox →User Settings → Restrictions. 
2. Select Password and follow the prompts to create a password. 
3. To unlock, select Menu, enter the password to unlock the menu.

USB:

1. Select Menu → Toolbox →User Settings → Restrictions. 
2. Select USB, then insert a USB flash drive and follow the prompts. 
3. Remove the USB flash drive and the Menu button will be locked. 
4. To unlock, insert the USB flash drive and select Menu.