Ugh, crap. I gave the wrong link the second time. Don't use that 2.15 firmware update I linked to, it won't work for you. Give me a minute and I'll post an update.
Sent from my Evita
Here's a quick guide.
You must have adb/fastboot installed on your PC.
You must have HTC drivers installed on your PC.
You need to download the xpwn.tar.gz file and extract it into your fastboot folder.
You need to open a command prompt from within your fastboot folder. To do this navigate to the location where adb.exe and fastboot.exe are located, shift + right click, then select open command prompt here.
adb push oneXchopper /data/local/tmp/xpwn
adb push busybox /data/local/tmp/busybox
adb push ownage /data/local/tmp/phase1.sh
adb shell chmod 755 /data/local/tmp/xpwn /data/local/tmp/busybox
adb shell ln -s /data/local/tmp/busybox /data/local/tmp/sed
adb shell "/data/local/tmp/xpwn"
adb reboot bootloader
OnePlus One | CM11S | TWRP 126.96.36.199
Do not PM me asking for assistance, that's what my Q&A thread is for!