Team Win strives to provide a quality product. However, it is your decision to install our software on your device. Team Win takes no responsibility for any damage that may occur from installing or using twrp.
You must be S-OFF or have taken HTC's unlock to use a recovery on your device!
Device Specific Known Issues:
Android App Install Method (preferred but requires root):
Download the TWRP Manager app:
Install the app and open it. Tap on Install TWRP. Select your device from the device list (m7) and then tap on Install Recovery. The file will download and be installed automatically.
Download - ADB / Terminal method:
Download the above file. Save it to the root of your /sdcard directly (internal memory only) and rename it to twrp.img
Launch terminal emulator or connect to your computer and open an adb shell, then type the following:
dd if=/sdcard/twrp.img of=/dev/block/mmcblk0p34
Then reboot to complete installation.
Download - Fastboot Method:
Download the above file into your platform-tools dir. Turn off your device. Turn on the device and keep holding volume down until a menu shows up. Select fastboot from the menu list. Plug the device into your computer. If you have the right drivers installed, your screen should now say FASTBOOT USB. Run the following command via the command line:
fastboot flash recovery recoveryfilename.img
Note that you will need to change the last part to match the name of the file that you just downloaded. This method requires that you have the drivers installed that come with the HTC Sync software that are available here. You will also need adb and fastboot for your computer.
Thanks to Flyhalf205 for porting TWRP to the HTC One