Upgrading from 4.0.5 to 4.1.0 or 4.1.1

Please refer to the upgrade instructions corresponding to your installation method.

• Composer Installation App Starter Upgrading

• Composer Installation Adding CodeIgniter4 to an Existing Project Upgrading

• Manual Installation Upgrading

Breaking Changes

Legacy Autoloading

Autoloader::loadLegacy() method was originally for transition to CodeIgniter v4. Since 4.1.0, this support was removed. All classes must be namespaced.