Unroot HTC M7 hboot 1.61

Hello,
I am no Phone-Expert and installed the root on my device just per internetinstructions.
Now i dont need anymore a rooted device and i want to unroot my device that i can install the new softwareupdates. Up to now many tries with different RUU's have failed.
My Data:
Tampered
Relocked
M7_UL PVT Ship s-on RH
HBoot-1.61.0000
Radio-4T.35.3218.16
OpenDSP-v35.120.274.0718
OS-7.18.206.2
eMMC-boot 2048mb
My device: HTC One M7 not branded Europe(as i researched it right)
Failled RUU's, because they are not right one:
RUU_M7_UL_JB_50_HTC_Europe_1.28.401.7_Radio_4A.13. 3231.27_10.31.1131.05_release_310878_signed(1)
RUU_M7_UL_K44_SENSE55_MR_O2_UK_4.20.206.16_Radio_4 A.23.3263.28_10.38r.1157.04L_release_353143_signed _2
RUU_M7_UL_K44_SENSE55_MR_HTC_Europe_4.19.401.9_R_R adio_4A.23.3263.28_10.38r.1157.04L_release_353069_ signed_2-1
RUU_M7_UL_JB_50_HTC_Europe_1.28.401.7_Radio_4A.13. 3231.27_10.31.1131.05_release_310878_signed

Would be so nice if you could help me!

Regards,

Julian

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