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So, you want to install custom ROMs on your HTC Evo 4G LTE? Well, you will need to unlock the bootloader and install TWRP recovery.
This will work on Android ICS 4.0.3, 4.0.4 and Android Jelly Bean 4.1.1, 4.1.2.
Before we begin, if you want to save personal settings, apps, SMS text messages, we highly recommend you to root your HTC Evo 4G LTE first (non-unlock bootloader method) if you are on software version 1.22.651.1 or less. Then use GMail for contacts, SMS Text Backup app for backing up SMS text, and Titanium Backup app to backup your apps.
If you don’t care or you have software version 1.22.651.3 and higher, you can just skip all that and just unlock your bootloader and root your phone following method on this page. But this will erase all your personal settings and apps so just know that beforehand. However, your personal photos, videos, and other files in internal storage/microSD card will not be affected.
Step 1. Put your phone into bootloader mode by holding down Volume Down and Power buttons together until your phone resets.
Step 2. Let go of the Power button for 1 second when your phone resets.
Step 3. Hold down the Power button again.
Step 4. Choose “FASTBOOT” and hit the Power button once in bootloader.
Step 5. Plug-in your microUSB cable from Evo 4G LTE to your computer. Your phone should say “FASTBOOT USB”. If it doesn’t, you will need to install drivers.
Step 6. If you have Windows, you will need to install drivers, download the appropriate drivers for your Windows and install it using Device Manager.
Step 7. Download Evo4GLTERoot2.zip and unzip. You will find all the necessary files you need to unlock bootloader and install TWRP recovery for all Windows, Mac, and Linux.
(Don’t have unzipping program? Download and install 7Zip first.)
Step 8. Open up a command prompt (or terminal for Mac and Linux) and type:
fastboot oem get_identifier_token
For Mac, change all “fastboot” with “./fastboot-mac” on this page.
For Linux, change all “fastboot” with “./fastboot-linux” on this page.
Step 9. You should get an Identifier Token, copy this token to your clipboard “exactly as shown below”.
Step 10. Go to HTCDev.com and log-in. If you don’t have an account, make one and log-in.
Then choose “Unlock Bootloader” and click on “Get Started”.
Step 11. Choose “All Other Supported devices” and click on “Begin Unlock Bootloader”.
Step 12. Click on “Yes”.
Step 13. Click on “Proceed to Unlock Instructions”.
Step 14. Scroll all the way down and click on “Proceed to Step 5”.
Step 15. Scroll all the way down and click on “Proceed to Step 8”.
Step 16. Scroll all the way down and paste the Identifier Token you copied earlier.
Step 17. Hit “Submit” and you should get “Token Submitted Successfully”. If you don’t, you didn’t copy Identifier Token correctly, go back to Step 9 and try again.
Step 18. Open your e-mail and you should have an e-mail from HTC.
Download the Unlock_code.bin file attachment to your computer.
Step 19. Copy the file Unlock_code.bin to the Evo4GLTERoot2 directory.
Step 20. Next type:
fastboot flash unlocktoken Unlock_code.bin
Step 21. Go to your Evo 4G LTE and select “Yes” using Volume Up button and hit the Power button, your phone should reboot.
Step 22. Connect your Evo 4G LTE as a media device to your computer and copy the file CWM-SuperSU-v0.87.zip in Evo4GLTERoot2 folder to anywhere on your phone.
Step 23. Reboot into bootloader by holding down Volume Down and Power button for 10 seconds. When your phone reboots, let go of the Power button for 1 second then hold it down again, just like you did in Step 1.
Step 24. Once in bootloader, choose “FASTBOOT”, hit the Power button, then plug-in your microUSB cable from your phone to computer.
Step 25. Type:
fastboot flash recovery openrecovery-twrp-2.1.8-jewel.img
fastboot erase cache
This will install custom TWRP recovery on your phone so you can start flashing custom ROMs.
I’ve also included the stock recovery if you ever want to unroot your phone.
You can do the following to install stock recovery later down the road if you need to:
fastboot flash recovery stock_EVO4GLTE_recovery.img
fastboot erase cache
Step 26. Choose “BOOTLOADER” and hit the Power button.
Step 27. Choose “RECOVERY” and hit the Power button.
Step 28. Choose “Install” in TWRP Recovery.
Step 29. Choose “CWM-SuperSU-v0.87.zip” and swipe to install it. This will give your Evo 4G LTE root and Superuser app.
Step 30. Choose “Reboot System” to reboot.
Step 31. Once rebooted, you should be all good to go, you now have unlocked bootloader, TWRP recovery, and fully-rooted phone.
You can go ahead and restore all your apps if you backed them up before unlocking bootloader.
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