Introduction
Downgrading RouterOS can be necessary for a confirmed compatibility or support case, but it can cause downtime and configuration incompatibility. Prepare backups, exported configuration, and a recovery path before changing a production router.
Production warning
Before downgrading production equipment, ensure that an off-device backup, configuration export, and physical or console access are ready. Schedule a maintenance window and confirm the recovery plan.
01 — Check Version and Architecture
Before downloading any package, record the RouterOS version, device architecture, installed packages, and RouterBOARD information. The downloaded package must match the device architecture, and its version must be appropriate for the intended downgrade path.
/system resource print
/system package print
/system routerboard print02 — Create a Backup and Export
Create both a binary backup and a text configuration export before the change.
/system backup save name=before-downgrade
/export file=before-downgradeBinary Backup
A binary backup is intended to clone the router configuration and is best restored to the same device and RouterOS version. It contains sensitive configuration information, so download and store it securely.
Configuration Export
An export is human-readable text that records user-edited configuration. It is useful for review and selective recovery, but it does not include all defaults or sensitive data such as user passwords and keys.
03 — Download the Correct Version
Download only official MikroTik packages from the MikroTik download page. Select the RouterOS package for the architecture identified in the first step, and include every required extra package at the matching version when the device uses extra packages.
04 — Upload the Package
Upload the older .npk package to the root of Files using WinBox or WebFig. Confirm that the upload completed, that the file is in the root Files view, and that the package architecture and version are correct before scheduling the downgrade.
05 — Run the Downgrade
Schedule the RouterOS downgrade with the following command only after the package, backup, export, and recovery access have been verified.
/system package downgradeAfter confirmation, RouterOS reboots. During boot, it checks the uploaded packages and attempts to downgrade to the oldest applicable version. Expect a service interruption during the reboot.
06 — Verify After Reboot
After the device becomes reachable, confirm the active package version, resource information, and system log. Test the management path and the production services that depend on the router.
/system package print
/system resource print
/log print07 — RouterBOOT Firmware
RouterOS is the operating system that runs router services and configuration. RouterBOOT is the RouterBOARD bootloader responsible for starting RouterOS. They are separate components and should not be treated as the same version-management task.
Do not downgrade RouterBOOT merely because RouterOS is being downgraded. RouterBOOT downgrade should be performed only for a documented troubleshooting or MikroTik Support requirement, using the firmware file and process applicable to the exact device model.
08 — Risks
Configuration incompatibility
A newer configuration can contain settings that the older RouterOS version does not support or interprets differently.
Extra packages
Missing or mismatched extra packages can remove features or prevent the intended package set from loading correctly.
Syntax changes
Exported configuration commands might require review because configuration syntax can differ between RouterOS versions.
Downtime
The reboot interrupts routing and other services. Plan the activity during an approved maintenance window.
Recovery Plan
- Keep the binary backup and text export outside the router in a secure location.
- Ensure that physical, serial, or console access is available before the maintenance window.
- Keep the known-good package set and the device architecture details available for recovery.
- Define the verification tests and the rollback decision point before the downgrade begins.
Best Practices
- Downgrade only for a documented compatibility, stability, or support reason.
- Use only official packages that match the device architecture and intended RouterOS version.
- Test the downgrade path on a non-production device when possible.
- Review the system log and service health after every reboot.
Troubleshooting
The downgrade does not use the expected package
Confirm the .npk file is in the root Files view, matches the architecture, and that no older unintended packages are present.
The router is unreachable after reboot
Use the prepared console or physical access path, inspect the device state, and follow the approved recovery plan rather than making unplanned changes remotely.
Configuration behaves differently after downgrade
Compare the text export with the supported syntax of the target RouterOS version and review the log for invalid or unavailable settings.
Frequently Asked Questions
Why should I create both a binary backup and an export?
They serve different purposes: a binary backup is for cloning and restoration on the same device and version, while a text export is readable and useful for reviewing configuration differences.
Can I upload any RouterOS package to the device?
No. The package must be official and must match the device architecture and the intended version.
Should RouterBOOT be downgraded together with RouterOS?
Not by default. RouterBOOT is a separate bootloader and should be changed only for a documented need and with the correct device-specific process.
Conclusion
A safe RouterOS downgrade depends on matching the correct package to the device architecture, preserving both a backup and export, preparing physical or console recovery access, and verifying the router after reboot. Treat RouterBOOT as a separate bootloader component and change it only when a documented requirement calls for it.
