With important improvements after each version, OpenCart is proving the power in digital market. Anybody wants to upgrade OpenCart latest version to enjoy the highest power. You want to upgrade opencart to latest version, there are some options for you.
Opt 1: Store owners can upgrade manually with technical knowledge. It is a cheap way. However it hides OpenCart upgrade error to loose database if your technical knowledge about OpenCart upgrade is limited.
1. Upload Oc 2.2 files to your store.
2. Remove (if is) all files from folder vqmod/vqcache and expired files from folder vqmod/xml
3. Go to admin
3:1. Find > extensions > modules and remove your 3 party modules
3:2. Same to admin > payment and admin > shipping
4. Go to url your_store.com/install and do upgrade
5. Remove folder catalog/model/total
Opt 2: It is smarter solution to avoid influence of upgrade data to 2.2. You can choose OpenCart upgrade tool, which runs to migrate data from 1.5.6.4 to 2.2 automatically by tool.
1. Preparation
2. Set-up OpenCart upgrade service
3. Automated Migration
Let's check
OpenCart upgrade 1.5 to 2.2.