PS: update all WSP solutions in the folder
Get-Item *.wsp|%{$_.Name}|%{Update-SPSolution -Identity $_ -LiteralPath "$($pwd.Path)\$($_)" -GACDeployment -Verbose}
Get-Item *.wsp|%{$_.Name}|%{Update-SPSolution -Identity $_ -LiteralPath "$($pwd.Path)\$($_)" -GACDeployment -Verbose}
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