For Hard flashing of your phone you can use this stock ROM.We flash our mobile at those stages if our phone is working slowly or completely break due to its expired or corrupted firmware.
Their are some flashing tools or boxes which can help you to flash your smartphones.Before flashing please take a backup of your data , otherwise you will lose your personal data and phone will restore in its original settings.
So guys now you can download the latest firmware of HTC Desire Eye from below download links. The download links are free.
HTC Desire EYE Flash File Download