There is a new firmware out that I'm running on my F320 now. Its F320K11a completely stock. However its a update.zip flash, so you need to install recovery and then flash it. I have flashed this over a F320S and L Model no problems. So its safe to say it will work on all F320's make a CWM backup first and place in on your hard drive just incase.
Changes include now in the menu nav settings you can now high the menu buttons for most apps.
Source and download
Its a 2.1GB download
Changes include now in the menu nav settings you can now high the menu buttons for most apps.
Source and download
Its a 2.1GB download