# Backup and Restore for PSI
### Overview
Backup and Restore for PSI was introduced in Verifone Commander Release `55.02`.
The feature creates automatic backups for supported software upgrade and reload workflows. It is designed to reduce manual backup work during Verifone Petro Suite Installer (PSI) updates.
Backup and Restore is intended to improve store uptime and reduce technician time on site. It also reduces reliance on manual backups with the SMS Import Export Tool.
The backup is available to technicians during a PSI software upgrade. A backup occurs every time a site configuration is changed.
### When the restore prompt appears
The System Configuration Restore prompt appears only when all of the following are true:
* The installed Verifone Commander version before the update is `55.01` or later.
* The target version is the same release or a later release.
* The customer profile selected during installation matches the installed customer profile.
* The customer software selected for installation matches the site profile.
If the installed version before the update is `55.00` or earlier, the restore prompt does not appear.
If the customer profile or software selection does not match, PSI continues without the restore option.
The following incompatibility message appears before continuing the installation process without the restore option.
{% hint style="info" %}
Refer to the **C18 Software Installation Guide** and **Verifone Commander Installation Guide** for more information on software installation.
{% endhint %}
### What happens during PSI
{% stepper %}
{% step %}
#### Start the software update
Run the software update in PSI.
Progress screens appear on the technician laptop or PC during the install.
{% endstep %}
{% step %}
#### Review the restore prompt
After step `8 of 8`, the System Configuration Restore prompt appears.
{% endstep %}
{% step %}
#### Choose whether to restore
Select **Yes** to restore the saved system configuration.
Select **No** to continue without the restore.
{% endstep %}
{% endstepper %}
### Restore outcomes
#### Commander was not onboarded previously
If Verifone Commander was not onboarded in the previous installation, the following message appears after the restore process is completed:
{% hint style="info" %}
This message does not appear when only POS is updated.
{% endhint %}
#### Some configuration files fail to restore
If some configuration files fail to restore, the following message appears with a list of the files that failed to restore:
{% hint style="info" %}
Review the listed files before returning the site to service.
{% endhint %}
#### No backup files are available
If no backup files are found, the following message appears. The installation then continues.
No backup files found
### Important note
{% hint style="warning" %}
Perform manual POS pairing every time the software is reloaded. The pairing certificate from the POS is not retained across PSI installations.
If the software is reloaded only on Verifone Commander, manual pairing is not required. The POS can still use the pairing certificate preserved on the Commander during PSI.
{% endhint %}
---
# Agent Instructions: Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.
Perform an HTTP GET request on the current page URL with the `ask` query parameter:
```
GET https://docs.verifone.com/commander-user-reference-guides/commander-user-references/commander-user-reference-57.00/backup-and-restore-for-psi.md?ask=
```
The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.
Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.