All-in-one toolkit lets you unlock and root any HTC One in a few clicks
HTC One now has its own toolkit for unlocking the bootloader, rooting, recovery for ROM flashing and so on. The developer hasoon2000 came up with the software, adapted from his work on previous HTC handsets.
There is one kit for each HTC One versions, so if you are novice and interested in getting the most out of your handset by tinkering around, head over to the source link for the installation details. There are already stable custom ROMs for the device out there that right a few wrongs, so you might be willing to give this a go.
source: hasoon2000 (XDA-Devs)