Forum Discussion
Windows 10 Insider Preview 18312.1001 (rs_prerelease)
I know you have done some manual resets with the bits but one of the things I have always done is run the TechNet article that references reset-windowsupdate.ps1 - I blogged about it here https://www.onthewinside.com/blog/complete-windows-insider-troubleshooting under the title Windows updates failures.
The blog goes alot deeper to go through and sulution troubles that insiders have - the Microsoft Script I use is on the technet site here https://gallery.technet.microsoft.com/scriptcenter/Reset-WindowsUpdateps1-e0c5eb78 (By Ryan Nemeth) and I have almost 100% success (in the end) running this script and reseting windows updates. You seem to be ready to choke out your InsiderBuild, why not give this a try to see if it gets you further?
Murray