GNB3 Update Installation Instructions 11/20/95 Version 1.2 This patch will update users from version 1.1 (not 1.0) to 1.2 of GNB3. Simply copy the two files PATCH.EXE and PATCH.RTP into your GNB3 dos directory. Go to that directory ( C:\GNB3 ) and type PATCH to update. After the patch files have finished updating your version of GNB3, type README to review the changes and fixes made in this version. If you have version 1.0, you'll need to download file GNB10_12.ZIP.