Couple of days back we covered perma temp root for HTC Sensation that sticks for a while, and now we learned that the same also applied on the HTC EVO 3D. As you all know that EVO 3D comes with locked bootloader that actually makes hacking the device to the core virtually impossible. Although there are promises from HTC to unlock the bootloaders of select devices which include EVO 3D, but the time frame to do the deed in unavailable and many users can’t wait to get rid of bloatware etc. Eugene373, recognized developer at XDA Forums, has managed to optimize the temp root and overclock efforts by TeamWin and Coolbhooo and released the final Perma –Temp Root for HTC EVO 3D. With this root, you will be able to retain SU binary and busybox but a reboot will reset all changes made. The root installs Busybox, SuperUser APK, SU Binary, Fre3vo exploit and fast reboot option.
Here is the latest change log of this root hack for EVO 3D direct from the developer: 
~ Fixed Losing SU / Root again. ( 1 change broken Root )
~ Script edits due bind mount error
~ Added Timers for Rooting after Reboot
~ Fixed Download error from market
~ forced read-write
~ Busybox Fixed & installed to /vendor/bin
~ Removed Overclocking as it seems a bit Buggy….. ( Commands are super easy to install anyways )
~ No Need to uninstall Superuser unless you have Force Closes
~ Added back the Double run of Exploit, as some users don’t get rooted the first try
~ Bloatware is not removed, you can do this from Root Explorer… ( You will not have the option to mount R/O )
~ 100% work around for R/O bug that causes us to lose Su Binary
~ Script error fixes for evo 3d & Sensation ( Not the same partition layout )
According to several users and testers of this root, the hack pretty much does what it says. According to one such tester, there are no force closures while running Titanium Backup and the SU binary doesn’t disappear.
Disclaimer: Please follow this guide at your own risk. AddictiveTips will not be liable if your device gets damaged or bricked during the process.
Here are the step by step instructions to Perma –Temp Root your EVO 3D with Eugene’s method:
- The first step is to download the Modified rooting package from here, extract and save the contents on your desktop for easy access.
- Once done, connect your phone to the computer. Select Charge Only mode and enable USB Debugging.
- Now double click on Run_ME_fre3vo_Root.bat file on your desktop and wait for the procedure to finish.
- After the process is complete, disconnect your phone and verify root by checking if Super User is present.
And there you go! You can now commit all the changes that you need, download Titanium Backup from Market and save them. In case you are stuck or need more information, please visit the official XDA thread dedicated for this purpose.