Hi Jeong-Min Kim,
Thank you for writing.
To download an older version (you have previously downloaded) follow these steps:
- Login to your Telerik account
- Click on "Products and Subscriptions" > "DevCraft Complete"
- Click on "Download installers and other resources"
- Click the "Older versions" link in the "UI for WinForms" pane
- Click the desired version
I hope this helps.
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