Those unfamiliar with any of this or what’s the big deal about booloaders, unlocking them is the first step in a process of getting root access to your Android device. A quick rundown is 1.) unlock the bootloader; 2.) flash (or install) a custom recovery; 3a.) flash Superuser or SuperSU for root access on the stock ROM or 3b.) flash a custom ROM with superuser access baked in; 4.) use any app that requires root access; 5.) enjoy extra battery life, better performance, and ultimate customization.
If you know anything about HTC Android devices, S-OFF is the holy grail for those wanting full customization. S-OFF allows write access to any part of a device and removes any restrictions on what can be changed, it’s a full and complete bootloader unlock. Alternatively HTC offers a process known as HTCdev unlock, which opens up most of a device with some parts still being locked down, while keeping S-ON. Devices which have been unlocked by the latter method cannot have their firmware updated (without updating the Hboot) and sometimes require extra steps for flashing kernels or ROMs. Personally I’ve had experiences with both and I could not get certain kernels to boot while unlocked with HTCdev.
If you own an HTC EVO 4G LTE and accepted the latest Jelly Bean OTA update, your Hboot would have been updated to version 2.09. This bootloader could not get S-OFF, only an unlock with HTCdev. Well, the S-OFF process known as Dirty Racun by Team Unlimited, which previously was only for Hboot version 1.15 and 1.19, was updated to include the latest 2.09 Hboot. Now all versions of the HTC EVO LTE can attain S-OFF! If you have a 1.12 Hboot, a process known as Lazy Panda by the same dev team used to get you S-OFF, but that’s no longer supported so you’ll need to update your Hboot to 1.15 first.
Via Team Unlimited’s site:
Supported Operating Systems:We only support Windows 7 32bit or Ubuntu 12.04 (and newer) 32bit, you may use a LiveCD if you have the wrong OS installed natively. Win XP 32bit might work for you but we do not support it as we did not test on it.Windows 8 (64 or 32), 64bit Windows, 64bit Ubuntu, Ubuntu versions lower than 12.04, Virtual Machines and Mac’s will NOT work – we will not help you if you break your device!
External SD card (2GB – 16GB) in your device.
Ensure that your battery is fully charged.
You must UNINSTALL HTC Sync and any other phone software on your computer prior to running DirtyRacun.
If you’re running Windows you should disable any Anti-Virus or Anti-Malware software prior to running our tools, it may interfere with ADB.
You must be directly connected to a USB 2.0 port on your computer. USB 3.0 and USB hubs will NOT work.
Note that Dirty Racun will work for the HTC Incredible 4G LTE with the 1.15 Hboot and the HTC J with the 1.17 Hboot as well.