How To Root htc One M8

Know Before Root:

1. This only works for PCs.

2. This will erase all the information on your device, so be sure to save anything you want to keep to your Computer before continuing.

3. Make sure your battery is over 75% charged.

4. This process may void all or parts of your warranty according to htc.

5. Go to setting,Battery manager, turn off Fastboot.

Unlock bootloader:

1. Download the latest version of toolkit for rooting.Download

2. Extract The .rar File on Your Desktop.

3. Open Toolkit now, and Download the USB Drivers Of Your Device From This Tool and install the Drivers In your PC.

4. Back in the toolkit, select Register at HTCDev and Click go.

5. In Your Device go to Setting > About > Software > Tap build number over and over until it tells you you are now a developer. 

6. USB Debugging ON.

7. Connect Your M8 to the pc using cable.

8. Highlight Get Token ID and click Go.

9. Close the command prompt when the device enters Fastboot mode

10.  Right-click in the second command prompt and select Mark and copy everything from (from Identifier Token Start to Identifier Token End ) 

11. and paste it into a text editor for later use.

12.  Highlight Submit Token ID and click Go.

13.  Login to HTCDev and then go to htcdev.com and click on Unlock Bootloader. 

14. Select the HTC One M8 from the drop down on the right and click Begin Unlock Bootloader.

15.  Skip the steps and hit next until you get to a text box to input the Token ID.

16. Paste your entire Token ID into the text box and click Submit.

17. Save the Unlock_code.bin file that is emailed to you to your desktop.

18. Highlight Unlock Bootloader and click Go.

19. Select the Unlock_code.bin file and click OK.

20. On the device, use the volume button to highlight Yes and push power to select it.

21. Go through your setup process when it reboots.

Flash custom recovery On Your Device: 

1. USB Debugging by going to Settings > About > Software Information > Tap build number over and over until it tells you you are now a developer.

2. USB Debugging should be ON.

3.  Highlight the custom recovery you want to flash (the ones labelled for specific carriers  i.e. srint must be used if using that version of the device) and click Flash Recovery.

4.  When the device boots back into Fastboot mode, close the first command prompt.

5. When it will be finished in the second command prompt, close it.

6. Using the volume button to navigate and power to select choose Reboot on the device.

Root Your M8:

1. Highlight Perm Room under Extras and click Run.

2. If you will see the file transferred close the first command prompt.

3.  Once the device reboots into recovery mode, tap on Install.

4. Select the SuperSU.zip file and swipe to flash it.

5. Click to Reboot  System.

Enjoy......