You can download PowerBuilder 10.5.1 Desktop and Professional editions from the PowerBuilder page of the Sybase EBFs/Maintenance site. Download the files you require and extract the contents of the zip files following the instructions in the download notes that accompany the release.
To install either of these products, you must have already installed version 10.5 of that product on your computer.
To update PowerBuilder Desktop or Professional:
Create a backup by copying the contents of your Sybase\Shared\PowerBuilder directory to another directory.
If you use the Translation Toolkit or the Internet plug-ins, back up the directories where they are installed. Also, back up .PBL and other files that contain information you do not want to lose, such as database files and .INI files.
Run the setup.exe file in the PowerBuilder directory extracted from the PowerBuilder.zip file.
Perform a full rebuild of your PowerBuilder application in the System Tree or Library painter to ensure that all descendent objects are synchronized with their ancestors and to incorporate any compiler fixes in your code.