> For the complete documentation index, see [llms.txt](https://docs.editran.onesait.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.editran.onesait.com/documentacion-editran/px-5.2.1-en/installation/linux_actualizacion.md).

# Linux update

## Requirements

To ensure the proper functioning of the system **Editran/PX**, the installation environment must meet the following requirements:

* On systems **Red Hat Enterprise Linux 9 (RHEL 9)**: have version of **OpenSSL 3.5** provided by the operating system itself with all security updates applied.
* On systems **Red Hat Enterprise Linux 8 (RHEL 8)**: have **OpenSSL version 1.1.1** installed.

## Update

* Stop **Editran/PX**.
* Make a backup copy of the directory of **Editran/PX** without deleting or moving the original folder. For example:

  ```bash
  cp -rp /opt/editranpx /opt/editranpx.v520
  ```
* Perform the software update following the instructions described in the section [installation](/documentacion-editran/px-5.2.1-en/installation/linux_instalacion.md)

  > ℹ️ *Note:* During the software update, you must select the same path where it is currently installed as the installation directory **Editran/PX** so that the update is applied to that installation.

  ![](https://944169240-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F6Bgxolt1oQVu07Im3iZJ%2Fuploads%2Fgit-blob-55c712c32b6f866c97963bf47f852478289ade68%2F19_actualizacion_linux_inicio.png?alt=media)

Once the installation is complete:

* Review the environment variables defined in `<home-px>/EDItranPX`.
* If the original installation was configured to run **Editran/PX** as a service, you must review the configuration of the unit file located at `<home-px>/service/editranpx.service` and then reload that configuration.
* Follow the instructions regarding the resolution of third-party libraries, as described in the section *Dependencies* of the document [installation](/documentacion-editran/px-5.2.1-en/installation/linux_instalacion.md)

## License

It will not be necessary to request a new license file when the update of **Editran/PX** affects only the third version level (for example, moving from 52.1.0 to 52.1.2).\
However, any modification in the first two levels of the version numbering, such as an update from 52.0.x to 52.1.x, requires the request for a new [license](/documentacion-editran/px-5.2.1-en/installation/licencia.md).


---

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