Upgrade prestashop 1.6 to 1.7

Today I learn how to upgrade prestashop version 1.6 to 1.7 and I did follow with below steps :

1. Make a fresh installation of Prestashop 1.7
2. Backup present PS 1.6 tables related to PRODUCTS, CUSTOMERS and ORDERS (i.e.: ps_product_17)
3. Modify those tables so they have the same structure as PS 1.7 (detail modification below)
4. Sql export data originally in 1.6 version, now modified for 1.7 with data
5. Insert former data into PS 1.7 tables
6. Rename original PS 1.7. tables (i.e.: ps_product_ORIGINAL)
7. Rename modified 1.6 tables to 1.7 original tables (i.e.: ps_product_17 to ps_product)
8. Check shop and data access
9. Copy product image folder “img/p” from PS 1.6 installation to PS 1.7 installation folder

Thanks