Are you trying to the update file, or are you having trouble using a specific text feature within the 2019.1 version?

Type QSELECT in the command line or find it under the tab > Utilities . In the dialog box, set the Object type to Text or MText .

Sometimes updates can change how user preferences work. If you find you can no longer double-click to edit text:

Click . This will highlight all text objects in your drawing while ignoring everything else. If you are having trouble editing text after the update

You are trying to find a way to select only text objects within an AutoCAD LT 2019.1 drawing, perhaps to bulk-edit or update them without affecting other geometry. Which of these If you need the 2019.1 Update File