I'm having the same problem. Was your phone originally a Stock HTC branded phone and you converted it to a GPe HTC One?
That's what I did which is probably the reason I received an OTA update that not intended to my hardware.
So at the moment I'm going down the route of reverting to a stock image. I've changed my CID to HTC__001, Relocked the bootloader and turned S-ON.
However, I'm not having any luck flashing the RUU (RUU_M7_UL_K44_SENSE55_MR_HTC_Europe_4.19.401.9_R_ Radio_4A.23.3263.28_10.38r.1157.04L_release_353069 _signed_2-1.exe)
Carrier: H3G (Three)
*** Relocked ***
M7_UL PVT Ship S-ON RH
Dec 9 2013,00:28:19.0
Can anyone recommend the correct RUU I should use?