Sorry for the delay; here's the follow-up.
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Step 1. DISABLE CAPACITIVE KEYS
First you need to disable the two capacitive keys MENU (left) and BACK (right) by commenting out two lines in a particular low-level file.
NOTE : As I said in my previous post, you will need root access for this.
NOTE : This is completely reversible ; you are not "breaking" anything.
FILE :
/system/usr/keylayout/Generic.kl
The two lines in question are these :
key 139 MENU
key 158 BACK
To disable them just comment them out :
# key 139 MENU
# key 158 BACK
Step 2. TURN CAPACITIVE KEY BACKLIGHTS OFF
Now that both capacitive keys are inactive, you probably don't want them lighting up anymore ( if you do, whatever the reason, just skip this step ). This is just a regular Note®Ⅱ setting that needs to be changed.
To disable the backlights, go to :
Settings
> Display
> Touchkey light duration
… and set to …
Always off
Step 3. BRING UP SOFTKEY NAV BAR
This is where you replace your now silent capacitive keys with a software equivalent, similar to what the Nexus 6 uses.
You have more than one choice here. The Note®Ⅱ does in fact "come with" one, and it can be activated rather easily, but there does exist other navbar-type apps you can install which offer significantly more customizability than the phone's own "inbuilt" (stock) one. You may wish to start with the latter just to get a feel for it and check out other options later on. I say a bit more about this at the bottom.
To activate the Note®Ⅱ's stock nav bar :
NOTE : Root required for this step.
FILE :
/system/build.prop
The visibility of the stock software nav bar is dependent on the value assigned to :
qemu.hw.mainkeys
… in the build.prop file. If the line is absent, its value is zero. As such, add the following line to the bottom of your build.prop :
qemu.hw.mainkeys=1
… then save and reboot.
To disable the nav bar, either simply delete the line above ( save & reboot ) or, the better alternative, leave the line in but change the value to zero :
qemu.hw.mainkeys=0
… and add in a couple of (#) comment lines describing what the line is and what it does ( save & reboot ).
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A word on other nav bar choices.
Personally, after having used one of the commercial ones for over a year, I couldn't go back to the stock one, and if you're something of a customization junkie as I am, I suspect you'll be much more satisfied with a commercial one as well, as you can define pretty much everything that is definable about a navbar : activation method, auto-hide, timing preferences ( time to appear/disappear, time to stay visible, etc.), choice of icon(s), color of both icons and background, even the number of icons and how they're placed ( you aren't limited to just MENU and BACK ), and so on. As I said, pretty well everything that can be customized… a good nav bar can significantly improve your device's user interface.
It may not be proper to recommend one here in the thread, so if you want to know the nav bar I've been using this past year or so ( it isn't available on Google Play at this time ) PM me and I'll direct you to its developer ( he's friendly and approachable, based on my dealings with him ) and let him fill you in.