How to Root the HTC J Butterfly (HTL21)

Now that you have your bootloader unlocked and have a custom recovery installed, it’s time to go on and do the most important thing if you want custom ROMs and use root-only apps – rooting the HTC J Butterfly.  The guide below will make it as painless for you as possible and you should be rooted and flashing custom ROMs in no time!

I.  Before You Begin

1.  You will need to have custom recovery installed on your device for this to work.  Use our guide on the same for help with this.

2.  You will need to have an unlocked bootloader before you can proceed.  This guide on the same should help you with it if you aren’t already unlocked.

3.  Charge your device to 75% or more before you begin.

4.  Back up anything you feel is important just in case.

II.  Necessary Downloads

SU_Busybox_Package.zip [Download link available in this post]

III.  Rooting the HTC J Butterfly

1. Connect your device to your PC and copy SU_Busybox_Package.zip to your SD card.

2.  Power down your device and boot into recovery.  To do this, press and hold the Volume Up + Down buttons.  Press and release the Power button but continue holding the Vol Up + Down buttons.  Once the menu appears, press the Volume Down button to highlight the Recovery option and the Volume Up button to select it.  If Volume Up doesn’t work, use the Power key to select the option.  On seeing the Android logo, press the Volume Up and Down buttons together to enter the recovery menu.

3.  Once in TWRP, tap on Install.

4.  Navigate to the location of SU_Busybox_Package.zip and select it.

5.  Swipe the arrow to install the zip file.

6.  Tap Reboot System to restart your device.

Once your device restarts, you should find the SuperSU app in your app drawer, which means that you now have root access to your device.  Install a root-requiring app to verify this if you are still in doubt or use the Root Checker app to do a quick check.

If this procedure helped you please thank/donate to the original developers here.

If you need help with this procedure, please ask in the comments below or in the forum.

This is part of our Android How To’s. We have how to’s on rooting, loading ROMs, and tons of other tips and tricks for your specific device or for Android devices in general! For all of our Android How To’s, head here.

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