Yeah, ROM Manager doesn't support our device. CWM doesn't support our device. And you made the fatal mistake of flashing a recovery meant for the quad core One X. If you have access to a Linux machine, you can try the steps in the unbricking thread in the General forum, or the JET tool (in the Development forum).
Otherwise, you now have an expensive paperweight.
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Phone: AT&T HTC One (M8)
Tablet: Samsung Galaxy Tab Pro 8.4 (WiFi only)