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Developer Edition HTC One M8 Sense 7 Marshmallow 6.0 MRA58K
Additional Information:
This RUU is untested by myself
RUU was created by decrypting the official HTC RUU.exe
Decryption tool that was used
http://forum.xda-developers.com/one-a9/development/decrypt-ruu-ruu-decryption-script-htc-t3282562