When you update software on MikroTik devices, the previous settings should generally not be altered.

RouterOS is designed to preserve existing configurations through software updates. However, there are some considerations and precautions that you should keep in mind:

1. Feature Compatibility

In some updates, especially those that introduce significant changes or new features, there may be adjustments to how certain settings are handled or interpreted by the system.

It is important to read the release notes provided by MikroTik before performing an update to understand any changes that may affect your current configuration.

2. Errors or Bugs

Although rare, software updates can introduce new bugs that could affect device performance or the functionality of certain settings.

It is advisable to wait a few days after the release of a new version to see if other users report problems and MikroTik releases fixes.

3. Update Process

During the update process, the system will reboot automatically. This reboot is necessary to apply the new software version.

Make sure there are no critical processes that could be affected by this reboot.

4. Configuration Backup

It is always good practice to back up your current configuration before proceeding with any upgrade. MikroTik RouterOS allows you to export the configuration to a file that can be safely saved and restored if necessary.

This provides a safety net in case the update inadvertently affects configurations.

/system backup save name=backup_pre_update

5. Post-Upgrade Testing

After updating, it's wise to review device settings and behavior to make sure everything is working as expected. Verify connectivity, performance, and that all functions are operating correctly.

6. Documentation Consultation

For any specific changes or feature additions that may affect your configuration, please consult the official MikroTik documentation or the community forums where users and professionals share their experiences and solutions related to specific updates.

By following these steps, you can minimize any risk of alteration to your settings and ensure a smooth transition during software updates on your MikroTik devices.