Migration Guide : Upgrading from OpenROAD 4.0 or 4.1 : Phase 1: Prepare for the Upgrade
 
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Phase 1: Prepare for the Upgrade
We recommend the following steps to prepare for an upgrade:
1. Ensure a 4.1 test environment exists.
2. Ensure a 4.1 development environment exists.
3. Create a 5.1 test environment.
4. Create a 5.1 development environment.
5. Build and test your applications under 4.1.
The following sections explain each of these steps.