UPDATED 06042016\rbr\rbrThis is a guide on how to Root, add a Custom Recovery, and Unlock the Bootloader for your HTC Desire 816 and HTC One models!\rbr(Sorry; no S-Off at this time for the 816. HTC One devices S-Off IS supported depending on your device).\rbr\rbr[FOR HTC DESIRE 816]\rbrThe AIO zip in step 5 includes and adds, Root, Busybox, Init.d, & Write Protection Removal to give us a working system RW permission and access to our devices like how it was on Jellybean and previous versions.\rbr(If you have already rooted just re-flash the new step 5 zip to gain the extra features but just be sure to wipe cache & dalvik cache.)\rbr\rbr[FOR HTC ONE M9 M8 M7 MAX]\rbrSimply follow the steps to flash each portion in the video meaning the steps to get the bootloader unlocked, then to flash the recovery and to finally flash the SuperSU .zip file IN THE EXACT SAME WAY IT IS DONE IN THE VIDEO! \rbrThese links are below as well and yes I have updated the recovery installers for each device I have listed in the description below.\rbr\rbrBack up your device information before you begin to your PC, Google Drive, etc. so that you may continue without risk of losing it. This is necessary because some devices will fory reset when you select Yes to unlock the bootloader.\rbr\rbrThanks to vsuperuser over at XDA Forums for the original text guide!\rbrThanks to Grarak over at XDA Forums for providing the modified recovery for the new .exe!\rbrThanks to xXminiWHOOPERxX at XDA Forums for the new .zip along with the version update list below!\rbr\rbrStep 1: HTC Sync Manager\rbr\rbr\rbrStep 2: Install ADB Fastboot\rbr\rbr\rbrStep 3: Unlock Bootloader\rbr(Simply choose the device that you have here, if it is not listed like the HTC Desire 816 then you choose the base model as shown in the video)\rbr\rbr\rbrStep 4: CWMTWRP Auto-Install via ADB Fastboot Bootloader\rbr[HTC DESIRE 816]\rbr\rbr[]\rbr\rbr[HTC ONE MAX GSM]\rbr\rbr[]\rbr\rbr[HTC ONE MAX SPRINT]\rbr\rbr[]\rbr\rbr[HTC ONE M9 ALL VARIANTS]\rbr\rbr[]\rbr\rbr[HTC ONE M8 ALL VARIANTS]\rbr\rbr[]\rbr\rbr[HTC ONE M7 VERIZON]\rbr\rbr[]\rbr\rbr[HTC ONE M7 SPRINT]\rbr\rbr[]\rbr\rbr[HTC ONE M7 SINGLE SIM VARIANTS]\rbr\rbr[]\rbr\rbr[HTC ONE M7 DUAL SIM M7CDUG]\rbr\rbr[]\rbr\rbr[HTC ONE M7 DUAL SIM M7CDTU]\rbr\rbr[]\rbr\rbr[HTC ONE M7 DUAL SIM M7CDWG]\rbr\rbr[]\rbr\rbrStep 5: ALL IN ONE SuperSU .zip file for Internal Storage\rbr(HTC DESIRE 816)\rbrIncludes Busybox, Init.d Installer, & Write Protection Removal)\rbr\rbr\rbr(ALL OTHER HTC ONE DEVICES LISTED)\rbrGood ol SuperSU\rbr\rbr\rbr-------------------------------------------------------------------------------------------------------------------\rbr[BELOW IS TESTED FOR THE VIRGIN MOBILE DESIRE 816]\rbr--------------------------------------------\rbrIf you want to return to pure stock for warranty:\rbrGo into the SuperSU app and remove root with the one click option in the settings of the app.\rbrNow go into your bootloader, enter fastboot, then plug your device in to the PC.\rbr\rbrWhen your plugged in and it says fastboot USB, flash the stock recovery which can be done with this .exe here:\rbr\rbr\rbrAfterwards, press reboot to bootloader and go into fastboot mode again and make sure it says fastboot USB.\rbr\rbrNow you can go into the Local Disk C:adb folder and open a command prompt.\rbrType the following command:\rbrfastboot oem lock\rbr\rbrYOUR DEVICE WILL SAY RELOCKED BUT THIS DOES NOT MATTER WITH WARRANTY AS LONG AS YOU REMOVE ROOT; PUT THE RECOVERY BACK TO STOCK, AND RELOCK THE BOOTLOADER! \rbr*CONFIRMED*\rbr\rbrTo ensure your device is pure stock and able to receive updates you can go the extra step and flash the RUU from this thread:\rbr\rbr\rbrYou can use the same process in the video to root again after updating your device.\rbr\rbrAlso, if you have never updated your VM Desire 816 since purchase then the RUU above will update the stock bootloader from 3.18 to 3.19.