Root [AT&T] Android 4.3 - RUU_M7_UL_JB43_SENSE50_MR_Cingular_US_3.17.502.3_R adio_4A.19.3263.13

[clsA]

Well here it is .. the Full/Final AT&T Android 4.3 RUU right from HTC

http://dl3.htc.com/application/RUU_...13_10.38j.1157.04_release_334235_signed_2.exe

Here are the instructions >> Support - ‎HTC One (AT&T) ‎ Product Support - News & download

If you prefer the decrypted Rom.zip is here >> http://forum.xda-developers.com/showthread.php?p=46303293