Bricked M8 after foolish update attempt topic

Okay, stupid and impatient me wanted to update to CM12.1 without realizing some of the technical issues that I have now discovered....

Long story short, the last thing I did (and first really) , was flashing the boot.img from the CM12.1 zip using fastboot:

Code:

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fastboot flash boot boot.img

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What I now have is the white HTC boot screen with the red development build text block, and that's it. No recovery, no bootloader, no love.

Am I screwed?

xda-developers