I have created a custom list named “K2 Workflow Tutorials” in which K2 workflow will be created to update SharePoint list.
Go to K2 designer, drag and drop Update List step from the Lists workflow steps in the ribbon interface.
Figure 1: Update List
Specify a site collection and then click on Next button.
Figure 2: Next Button
Specify filters for the list to update and then click on Next button.
Figure 3: Specify Filter
Specify updated values for the list and then click on Finish button.
Figure 4: Select
Deploy the workflow. Create a list item with title field value as “Test”. After few minutes the workflow will be completed and update the list which is having the title as “Test”.