anyone gotten root on this update yet? if so what method was used. ?
yeh, I finally got full root, took me a long time and a lot of experiementing. My HTC is the converted one I did myself from the original out of the box HTC one on ATT. I was on a custom rom with TWRP, unlocked bootloader, S-Off, did the conversion and got the 4.3. Then downloaded the OTA 4.4 update and flashed that. Then things went downhill from there . ADB wouldn't work so updated SDK manager to 4.4 , finally got CWM to flash , had a lot of trouble with flashing SuperSU . Then finally got TWRP to flash but still didn't have root. Someone gave me a link to the updated SuperSu
SuperSU Download. Flashed that , then from the app drawer reflashed the app SuperSu. and checked with Root Checker Basic app and it finally says " congratulations device is rooted. Took me about 4 days of trial and error but mostly errors, figured it out tho now have a fully rooted , bootloader unlocked, S-Off , 4.4 Kit Kat converted HTC One.