1. Download the new ZIP file for each plugin from our site.
2. Copy folder from ZIP file for nop 4.00 (all files) to your new nop 4.00 store.
3. Restart your site (nop 4.00).
4. Plugin will upgrade itself.
You needn't use nop 3.90 for upgrade.
Upgrade to nop 4.00 at once.
If you see the message "Expire license" write us, we'll send URL with 50% discount.