AWS Mainframe Modernization Service (Managed Runtime Environment experience) is no longer open to new customers. For capabilities similar to AWS Mainframe Modernization Service (Managed Runtime Environment experience) explore AWS Mainframe Modernization Service (Self-Managed Experience). Existing customers can continue to use the service as normal. For more information, see [AWS Mainframe Modernization availability change](https://docs.aws.amazon.com/m2/latest/userguide/mainframe-modernization-availability-change.html).

# Upgrade the AWS Transform for mainframe Runtime on container
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This guide describes how to upgrade the AWS Transform for mainframe Runtime on container. To do this, you need to first complete some prerequisites, and then work with Docker image to upgrade the AWS Transform for mainframe Runtime.

**Topics**
+ [Prerequisites](#ba-runtime-maint-prereq)
+ [Upgrade the AWS Transform for mainframe Runtime](#ba-runtime-maint-copy-files)

## Prerequisites
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Before you begin, make sure you meet the following prerequisites.
+ Complete [AWS Transform for mainframe Runtime prerequisites](ba-runtime-setup-prereq.md) and [Onboarding AWS Transform for mainframe Runtime](ba-runtime-setup-onboard.md).
+ Download the version of the AWS Transform for mainframe Runtime that you want to upgrade to. For more information, see [Onboarding AWS Transform for mainframe Runtime](ba-runtime-setup-onboard.md). The framework consists of two binary files: `aws-bluage-runtime-x.y.z.zip` and `aws-bluage-webapps-x.y.z.zip`.

## Upgrade the AWS Transform for mainframe Runtime
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Complete the following steps to upgrade the AWS Transform for mainframe Runtime.

1. Rebuild your Docker image with the desired AWS Transform for mainframe Runtime version. For instructions, see [Set up AWS Transform for mainframe Runtime on container](ba-runtime-deploy-container.md).

1. Push your Docker image to your Amazon ECR repository.

1. Stop and restart your Amazon ECS or Amazon EKS service.

1. Verify the logs.

The AWS Transform for mainframe Runtime is successfully upgraded.