qemu.hw.mainkeys=1 works for everyone EXCEPT ME
Ever since getting my Razr Maxx HD (XT926) three months ago I've been trying to get rid of the Navigation Bar on the bottom of the screen. I use Button Savior so I'm fine with having the NavBar controls disappear.
Among the most reliable remedies seemed to be upgrading to 4.1.2, at which point many people said that you could simply add the line "qemu.hw.mainkeys=1" to the end of your build.prop file in /system, reboot, and *poof* the NavBar would be gone. My phone, which I bought used, was running a leaked 4.1.1 so, once root for OTA 4.1.2 was discovered, I downgraded to 4.0.4, did the updates to that, then took the OTA upgrade to 4.1.1 (no problem), then took the OTA upgrade to 4.1.2 (no problem). So now I had the latest JB version offered for Verizon XT926 in the US. I know that I'd wiped data at least once along the way. The SafeStrap installation that I used to have was gone, as I expected. I assumed that my phone was as stock as it could be and thus ready for the build.prop edit.
I used the new procedure to root my XT926. At that point all I did was to download and install Root Explorer (needed to do the build.prop edit) and Button Savior (needed for navigation once NavBar was gone). In Root Explorer I navigated to /system, made it R/W, opened build.prop in the stock text editor, added qemu.hw.mainkeys=1 at the end, saved (which backed up the older version as expected), and rebooted.
The first thing I get when my phone boots up is the "SystemUI has crashed" error message. My NavBar is gone but so is my System Bar (a/k/a Notification Bar), which I need and want to be visible. I've read a TON about this and I'm pretty sure I've followed the instructions. Why is this not working for me?
I am just not smart enough to decompile and edit my framework-res.apk file (or whatever the name is) so I'm stuck trying to make the build.prop edit work. What could I be doing wrong?
(also, if I use one of the apps like FullScreen or BottomBar they produce the EXACT SAME result -- SystemUI crashes, NavBar disappears but so does System Bar).