Install Serum 2
Open Serum 2
Open the preset browser
Locate the Serum 1 preset folder or import location
Copy your Serum 1 presets into the Serum 2 user presets folder
Use Serum 2’s preset import or rescan function
Load the imported presets in Serum 2
Save any converted presets as Serum 2 presets if needed