@rhahgleuhargh
There is an error in the UL x64:
KB4470637 (NET-FW 4.5.2) instead of KB4470641 (NET-FW 3.5.1)!
<!-- 2018 -->
<update id="KB4470637" category="2" publishdate="2018-12-12" article="http://support.microsoft.com/kb/4470637">
<title>KB4470637 - MAJ pour Microsoft .NET Framework 3.5.1 sous Windows 7 SP1 x64</title>
<description>Security and Quality Rollup for .NET Framework 3.5.1.</description>
<filename>4-Windows6.1-KB4470637-x64.msu</filename>
<url>http://download.windowsupdate.com/d/msdownload/update/software/secu/2018/12/ndp45-kb4470637-x64_3a008835532612473c1b6ad89ab15c324b66c0f9.exe</url>
</update>
x86 is OK.