How to unistall Device Drivers via MSI with DPInst?

Hi all. I have a doubt a bout how to unistall device drivers via MSI.

We are now install the drivers via MSI using as custom action a VBScript and when we plug the device in it works perfectly but now we have a new problem. The problem is unistall those drivers.

When uninstalling we use a very similar VBScript as when installing, somethin like this:

Dim oShell
Dim source Set
oShell = CreateObject ("WSCript.shell")
dir = oShell.ExpandEnvironmentStrings("%Temp%")
dir2 = oShell.ExpandEnvironmentStrings("%windir%")
source = dir + "\Device Drivers\"
dir2=  dir2 + "\system32\DRVSTORE\"
oShell.Run "cmd /k"+" cd"+" "+source+"DPInst_x86 & DPInst.exe /s /u "+" "+dir2+"toaster_4644C6CF04F87E5745CAF63D887EAACCF779346F\hpzid413.inf", vbhide


If we run this script manualy, it unistalls correclty  the Driver but when we try to run it from a CustomAction from the MSI when Removing the application.

We are not pretty sure of what sequence number set for that action on InstallExecuteSequence Table.

Well that´s our problem.  I hope some of you could help us.

Bye bye...
AlexIraMtyAsked:
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HubasanCommented:
Hi, AlexIraMty

Any removal, uninstall, or deletion of files and registry keys as a custom action within an MSI, should always go just before "Install Finalize". Install finalize should always be your last marker for your custom actions, as custom actions will most likely not execute after install finalize action. If this script you wrote works when you execute it manually, just place it before install finalize and it should work.
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