You mean KB4073290?
KB4073290 is for x64/64bit and KB4073291 is for X86/32bit, and boot updates solved the same issue with AMD Athlon 64 and related CPUs with unbootable status caused by KB4056892.
Thank you for the info, although I am confused:
https://support.microsoft.com/en-us/help/4073290/unbootable-state-for-amd-devices-in-windows-10-version-1709
Has been interpreted as the fix for Win10 x64 AMD X2 unbootable state.
Update Details
2018-01 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4073290)
Last Modified: 1/17/2018
"Architecture: AMD64 , X86"
"Package Details-Replaces-2017-11 Cumulative Update for Windows 10 Version 1709 for x64-based Systems (KB4051963)"
&
https://support.microsoft.com/en-nz/help/4073291/january-18-2018-kb4073291-os-build-16299-201
Has been interpreted as the fix for Win10 x86 AMD X2 unbootable state.
"This update provides additional protections for 32-Bit (x86) version of Windows 10 1709 after you install January 3, 2018—KB4056892 (OS Build 16299.192)"
"Last Modified: 1/18/2018"
"Architecture: AMD64 , X86"
"Package Details-Replaces:
2017-10 Cumulative Update for Windows 10 Version 1709 for x86-based Systems (KB4043961)
2017-11 Cumulative Update for Windows 10 Version 1709 for x86-based Systems (KB4048955)
2017-11 Cumulative Update for Windows 10 Version 1709 for x86-based Systems (KB4051963)
2017-12 Cumulative Update for Windows 10 Version 1709 for x86-based Systems (KB4054517)
2018-01 Cumulative Update for Windows 10 Version 1709 for x86-based Systems (KB4056892)"
Are you sure KB4073290 replaces for the x64 OS, all the packages KB4073291 replaces???
EDIT: This question is also directed at any MS engineer that may be watching this thread...