HTC reached back more than two years to add to the list of its handsets that can now have the bootloader unlocked. For example, one of the devices on the list is the HTC DROID ERIS
. How many of you remember that handset, which was launched via Verizon at the same time as the Motorola DROID? Other phones that you can now unlock the bootloader on include another old-timer, the HTC Hero. The list also has the HTC Legend, the T-Mobile myTouch 3G and the T-Mobile myTouch 4G. It should be pointed out that the variant of the Hero included is the GSM model and to unlock that model's bootloader,you might be required to flash a new RUU.
Unlocking the bootloader makes it easier for you to customize the software
on your device, but at the same time it voids the warranty on the phone. if you are going to unlock the bootloader on your unit, make sure you know exactly what you are doing. To get started, head over to the sourcelink, select your device and click on the "Begin Unlock Bootloader" button.
source: HTC (1