Just as an FYI, that is called "lambda" which is a greek symbol.
Also, this works on 183.46.10 (the current KK ota that came out a few months back), but it does NOT work with the latest soak test (183.46.14), so you need to stay on 183.46.10, root with towelroot and then unlock your bootloader. If you do not do this AND if you take the soak test, you will be unable to root as a root exploit for 183.46.14 does not exist.
I don't want to say it won't ever be rooted, but as more and more exploits are patched up, it becomes harder and harder to root this phone, so your best bet is to root and unlock the bootloader on 183.46.10. Don't take the chance on whether a root exploit will be found or not. You'll save yourself, and the rest of us, a lot of headaches.
If you have already applied the 183.46.14 before rooting and unlocking your bootloader, you are SOL. There is NO way to go back to the previous version and root and unlock, so please do NOT ask how to revert back from the current soak test (183.46.14) and root and unlock your bootloader because you can't. You just can't, so don't ask.
I repeated what I just said because people always ask "well, if you flash back to 183.46.10". The problem is, the exploit that allowed unlocking of the bootloader is in a protected area that even unlocked bootloaders cannot write to without the proper encrytion keys. Once that area has been patched via the latest soak test, you have no way to write over it again because you would need the proper encryption key inside the image to flash in order for it to work. Unless Motorola becomes nice and gives you the key, it won't work. And the previous OTA's key is now invalid, so again, flashing the previous FXZ (183.46.10) will not work. It will just skip writing the protect area.
Clear as mud? Hopefully.
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RAZR HD XT926 (unlocked)
32gb Nexus 7