Install latest version of the Sitecore Install Framework and remove any previously installed versions

InstallSitecoreInstallFramework.ps1

Import-Module SitecoreInstallFramework
$Module = Get-Module SitecoreInstallFramework
Remove-Module $Module.Name
Remove-Item $Module.ModuleBase -Recurse -Force
Register-PSRepository -Name SitecoreGallery -SourceLocation https://sitecore.myget.org/F/sc-powershell/api/v2
Set-PSRepository -Name SitecoreGallery -InstallationPolicy Trusted
Install-Module SitecoreInstallFramework
Get-Module -Name SitecoreInstallFramework -ListAvailable

Thanks for sharing. I believe you can add -InstallationPolicy Trusted to the end of Register-PSRepository to suppress the trust notifications.

Thanks Mike, now updated