I'm trying to remove the tampered text, and no matter what once I get to the screen in the RUU with the update button and hit that, nothing happens. Is there anything I'm doing wrong?

I have downgraded the rom on my phone, but it still says the image that's on the phone is 3.17. My h-boot is now 1.09.
Current Devices:



AT&T HTC One M8



Former Devices:

Google LG Nexus 5
AT&T HTC One M7
AT&T Moto X
AT&T Samsung Galaxy S II
Google Asus Nexus 7
AT&T HTC One X
Apple iPhone 1st gen
Apple iPhone 3G
Apple iPhone 4