> [!CAUTION]
> **Caution:** This documentation covers Edge for Private Cloud 4.18.05, which is no longer supported. Google does not provide security patches, bug fixes, or technical support for this version. The current supported version is 4.54.00. See the [Edge for Private Cloud documentation](https://docs.apigee.com/private-cloud/latest/overview) for the current version, or [All versions](https://docs.apigee.com/private-cloud/versions) to compare releases.

*Edge for Private Cloud v4.18.05*

This section describes how to perform the following upgrades:

- From 4.16.01 to 4.18.05
- From 4.16.05 to 4.18.05

#### All Upgrade Paths

The following table shows you the upgrade paths for version 4.18.05:

|   ||
|---|---|
| From 4.18.01 | Directly [upgrade from 4.18.01 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805) |
| From 4.17.09 | Directly [upgrade from 4.17.09 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-4170541709-41805) |
| From 4.17.05 | Directly [upgrade from 4.17.05 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-4170541709-41805) |
| From 4.17.01 | [Upgrade from 4.17.01 → 4.18.01](https://docs.apigee.com/private-cloud/v4.18.01/update-apigee-edge-4170x-41801), then [upgrade from 4.18.01 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805) |
| From 4.16.09 | [Upgrade from 4.16.09 → 4.18.01](https://docs.apigee.com/private-cloud/v4.18.01/update-apigee-edge-41609-41801), then [upgrade from 4.18.01 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805) |
| From 4.16.05 | [Upgrade from 4.16.05 → 4.18.01](https://docs.apigee.com/private-cloud/v4.18.01/update-apigee-edge-4160141605-41801), then [upgrade from 4.18.01 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805) |
| From 4.16.01 | [Upgrade from 4.16.01 → 4.18.01](https://docs.apigee.com/private-cloud/v4.18.01/update-apigee-edge-4160141605-41801), then [upgrade from 4.18.01 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805) |
| From 4.15.0x | [Upgrade from 4.15.0x → 4.16.01, then upgrade from 4.16.01 → 4.18.01](https://docs.apigee.com/private-cloud/v4.18.01/update-apigee-edge-4160141605-41801), then [upgrade from 4.18.01 → 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805) |

**To upgrade version 4.16.01 or 4.16.05 to 4.18.05:**

1. First, [upgrade version 4.16.01 or 4.16.05 to version 4.18.01](https://docs.apigee.com/private-cloud/v4.18.01/update-apigee-edge-4160141605-41801).
2. Then, [upgrade from 4.18.01 to 4.18.05](https://docs.apigee.com/private-cloud/v4.18.05/update-apigee-edge-41801-41805).

> [!CAUTION]
> **CAUTION** : When an update is part of a multi-step process in which you first upgrade to one version and then to version 4.18.05, be sure to rigorously test your installation on *each version* before continuing.
>
> If you discover an issue later, you can roll back to the previous version only.