CRS125-24G-1S Downgrade: A Simple Guide for Beginners

by Admin

Introduction

The crs125-24g-1s downgrade is a popular networking device from MikroTik, known for its efficiency and reliability. However, sometimes, upgrading the RouterOS on this device can lead to compatibility issues or performance hiccups. In such cases, a downgrade becomes necessary.

If you’re scratching your head trying to figure out the CRS125-24G-1S downgrade process, don’t worry! This guide will walk you through everything you need to know—step by step—in plain English. By the end, you’ll feel confident in handling this task without breaking a sweat.


What is CRS125-24G-1S?

Before we dive into downgrading, let’s quickly understand what this device is all about. The CRS125-24G-1S is a powerful cloud router switch with 24 Gigabit Ethernet ports and one SFP (Small Form-factor Pluggable) port. It’s often used in home and business networking setups, offering flexibility in managing complex networks.

However, like all tech devices, the software running on it—MikroTik’s RouterOS—sometimes experiences bugs or unexpected behavior after an update. This is where downgrading becomes a lifesaver.


Why Would You Need to Downgrade?

There are several reasons why you might want to downgrade the software on your CRS125-24G-1S:

  1. Buggy Updates: Some RouterOS updates may introduce bugs that disrupt your network’s performance.
  2. Feature Compatibility: New updates might drop support for older features that are critical to your setup.
  3. Stability Issues: If the updated version is less stable than the older one, a downgrade can restore smooth operation.
  4. Personal Preference: Some users simply prefer the interface or features of an older version.

Step-by-Step Guide to Downgrade CRS125-24G-1S

Here’s a simple guide to help you perform the downgrade process safely and effectively:

Step 1: Back Up Your Configuration

Before doing anything, back up your current CRS125-24G-1S configuration. If anything goes wrong, you can easily restore your settings.

  1. Log in to the RouterOS interface via Winbox or web access.
  2. Navigate to Files > Backup.
  3. Save the backup file on your local device.

Step 2: Download the Desired RouterOS Version

To downgrade, you’ll need to download the specific RouterOS version you want to use.

  1. Visit the official MikroTik website: https://mikrotik.com/.
  2. Navigate to the Download section.
  3. Find the older RouterOS version compatible with your CRS125-24G-1S.

Make sure to match the architecture (usually “MIPSBE” for this device).

Step 3: Upload the Files to Your Device

  1. Use Winbox or FTP to upload the downloaded files to your CRS125-24G-1S.
  2. Place the file in the Files section of the RouterOS interface.

Step 4: Perform the Downgrade

  1. Go to System > Packages in the RouterOS interface.
  2. You should see the uploaded file. Click on it to downgrade.
  3. The device will restart automatically during the process.

Step 5: Verify the Downgrade

  1. After the downgrade is complete, log in to your CRS125-24G-1S.
  2. Go to System > Resources to check the version number and confirm that the downgrade was successful.

Tips for a Smooth Downgrade

  • Use Stable Versions: Always choose a RouterOS version marked as “stable” to avoid future issues.
  • Keep Backups Handy: Save your backup file in multiple locations, such as a cloud drive and a USB stick.
  • Check Compatibility: Ensure the older version supports all your device features and configurations.

Common Mistakes to Avoid

  • Skipping the Backup: Not backing up your configuration can lead to unnecessary headaches if something goes wrong.
  • Interrupting the Process: Avoid turning off the device or disconnecting it during the downgrade, as this can cause firmware corruption.
  • Using the Wrong Version: Uploading an incompatible version of RouterOS can brick your device. Double-check compatibility before proceeding.

Conclusion

Downgrading your CRS125-24G-1S doesn’t have to be complicated. By following this guide, you can safely roll back to an older version of RouterOS, fix bugs, and restore stability to your network. Remember, preparation is key—back up your configurations, double-check compatibility, and take your time.

Now, go ahead and try it out. You’ve got this!


FAQs

1. What happens if I downgrade to the wrong RouterOS version?

If you install an incompatible version, your CRS125-24G-1S might not boot properly. Always double-check the version before proceeding.

2. Can I upgrade again after downgrading?

Yes! You can upgrade to a newer version at any time by following the same upload-and-install process with the latest RouterOS files.

3. Is downgrading risky?

If done correctly, downgrading is a safe process. However, skipping backups or interrupting the process can lead to issues.

4. How do I restore my CRS125-24G-1S if something goes wrong?

You can restore your device using the backup file saved earlier or by performing a reset and re-uploading the configuration.

5. Do I need special tools for the downgrade?

No, you only need basic access to the RouterOS interface (via Winbox or web) and the correct software files.

6. How can I contact MikroTik support?

Visit the MikroTik support page for official help with troubleshooting and advanced configurations.

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