a way to update powershell without using the msix..

Update-PowerShell.ps1

function Update-PowerShell {
    [cmdletbinding()]
    <#
    .DESCRIPTION
    Update PowerShell 7 avoiding the msix mainly...
    mostly logic for checking for new versions and setting path + elevating session 
    .Notes
    on first run it downloads https://aka.ms/install-powershell.ps1 and uses that for the actual install logic.
    #>
    param(
        [string]$Path,
        [switch]$Preview
    )

    $releases = Invoke-RestMethod 'https://api.github.com/repos/PowerShell/PowerShell/releases'
    $realPath = if (![string]::IsNullOrEmpty($Path)) { $Path } else { $env:ProgramFiles }

    if ($PSBoundParameters['Preview']) {
        $InstallPath = Join-Path $realPath 'PowerShell' '7-preview'
        $candidate = $releases | Where-Object { $_.prerelease } | Select-Object -First 1
    }
    else {
        $InstallPath = Join-Path $realPath 'PowerShell' '7'
        $candidate = $releases | Where-Object { -not $_.prerelease } | Select-Object -First 1
    }

    $Current = Get-Command (Join-Path $InstallPath 'pwsh.exe') -ErrorAction 'Ignore'

    if ($Current) {
        $candidateVersion = [semver]$candidate.tag_name.TrimStart('v')
        $currentVersion = [semver]($Current.FileVersionInfo.ProductVersion -split '\s', 2)[0]
        if ($currentVersion -ge $candidateVersion) {
            return [PSCustomObject]@{
                Updated       = $false
                Version       = $currentVersion
                OnlineVersion = $candidateVersion
                InstallPath   = $InstallPath
            }
        }
    }

    Write-Verbose "A new version of PowerShell is available. Current version: $currentVersion, Latest version: $candidateVersion"

    if ($PSHOME -eq $InstallPath) {
        $PSCmdlet.ThrowTerminatingError(
            [Management.Automation.ErrorRecord]::new(
                <# Exception     #> [Management.Automation.PSNotSupportedException]::new(
                    'Updating PowerShell from the running instance is not supported.'
                ),
                <# errorId       #> 'UpdateNotSupported',
                <# ErrorCategory #> [Management.Automation.ErrorCategory]::InvalidOperation,
                <# targetObject  #> $PSHOME
            )
        )
    }

    $InstallScript = Join-Path (Split-Path $PSCommandPath -Parent) 'Install-Powershell.ps1'
    if (-not (Test-Path $InstallScript)) {
        Invoke-RestMethod 'https://aka.ms/install-powershell.ps1' -OutFile $InstallScript
    }

    function QuoteSingleQuotedLiteral {
        param([string]$Value)
        "'" + ($Value -replace "'", "''") + "'"
    }

    $IsAdmin = [Security.Principal.WindowsPrincipal]::new(
        [Security.Principal.WindowsIdentity]::GetCurrent()).
    IsInRole([Security.Principal.WindowsBuiltInRole]::Administrator)

    $splat = @{
        Destination = $InstallPath
        Preview     = $Preview
    }

    Write-Verbose "Installing PowerShell to $InstallPath. This may take a few minutes.."
    if ($IsAdmin) {
        & $InstallScript @splat
        Get-ChildItem -Recurse $InstallPath | Unblock-File
        return
    }

    Write-Warning 'Not running as administrator. Attempting to elevate privileges...'
    $sudo = Get-Command sudo.exe -ErrorAction 'Stop'
    $command = "& $(QuoteSingleQuotedLiteral $InstallScript) -Destination $(QuoteSingleQuotedLiteral $InstallPath)"
    if ($Preview) {
        $command += ' -Preview'
    }
    $command += "; Get-ChildItem -Recurse $(QuoteSingleQuotedLiteral $InstallPath) | Unblock-File"
    Write-Verbose "Command: $command"
    $encodedCommand = [Convert]::ToBase64String([System.Text.Encoding]::Unicode.GetBytes($command))

    $pwsh = Join-Path $PSHOME 'pwsh.exe'
    $switches = @('-NoLogo', '-NonInteractive', '-NoProfile')
    & $sudo --preserve-env --inline $pwsh @switches -EncodedCommand $encodedCommand
    if ($LASTEXITCODE -ne 0) {
        $PSCmdlet.ThrowTerminatingError(
            [Management.Automation.ErrorRecord]::new(
                <# Exception     #> [Management.Automation.PSNotSupportedException]::new(
                    "PowerShell installation failed with exit code $LASTEXITCODE."
                ),
                <# errorId       #> 'UpdateFailed',
                <# ErrorCategory #> [Management.Automation.ErrorCategory]::InvalidOperation,
                <# targetObject  #> $InstallScript
            )
        )
    }
    [PSCustomObject]@{
        Updated       = $true
        Version       = $currentVersion
        OnlineVersion = $candidateVersion
        InstallPath   = $InstallPath
    }
}