We also offer free upgrades to existing 5.x users. This should bring you to 5.2. Version 4.x has many updates available that may help with your situation. Updates are only recommended when you are experiencing issues with your current version of SilverFast 4.x. If you are experiencing problems with your serial numbers, please visit the respective page.
Chances are, there is a simple solution.
Utilities Programs and other file helpers for downloads, web site viewing, etc. Frequently Asked Questions Answers most questions regarding SilverFast or recommended usage. Download Updates Recommended only if you are currently experiencing a problem with SilverFast. A checklist that may help out if you cannot get a serial number to work. Utilities Programs for site viewing and downloads.