[en] If print jobs are waiting in the Windows spooler, PrnInst displays a notification:
[en] You can update your driver in:
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[en] Manual mode. Manually remove current print jobs from the spooler. To check if the queue is empty and to continue with the driver update, click Refresh.
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[en] Automatic mode. PrnInst deletes all print jobs from the spooler and continues with the updating.
[en] To verify that your printer drivers are updated, check the driver version in the About tab after the update. If the old version displays, restart Windows to finish the update process.