To upgrade the plugin without changing nop release (ex. upgrading the plugin 1.12 for nop 4.20 to 1.13 for the same nop 4.20) you have to:
1. Upgrade the nopcommerce.
2. Backup old plugin folder and database.
3. Overwrite the plugin folder internals with new ones from ZIP file.
4. Restart nopcommerce instance.
The plugin will be upgraded automatically.

 

To upgrade the plugin with nop upgrade from 3.xx-4.20 to 4.30-4.40 you have to:
1. Upgrade the nopcommerce.
2. Backup old plugin folder and database.
3. Overwrite the plugin folder internals with new ones from ZIP file.
4. Execute SQL script Update430.ShippingRules.sql from UpgradeSQL folder.
5. Restart nopcommerce instance.

 

To upgrade the plugin with nop upgrade from 4.30 to 4.40 you have to:
1. Upgrade the nopcommerce.
2. Backup old plugin folder and database.
3. Overwrite the plugin folder internals with new ones from ZIP file.
4. Restart nopcommerce instance.
The plugin will be upgraded automatically.