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Made by Synology · firmware
The Synology FS3420 is a 2U all-flash enterprise NAS built for high-throughput, low-latency workloads such as virtualization and databases. It runs DiskStation Manager and supports high-availability configurations, SSD caching, and enterprise data protection features.
Product released: June 22, 2026
Version 7.4.1-90080 Update 1, released October 12, 2026
Last checked for updates: Oct 18, 2026 12:23 UTC
Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually. The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly. Your DSM is working fine without having to update. The system evaluates service statuses and system settings to determine whether it needs to update to this version. This update will restart the device. Fixed Issues Fixed security vulnerabilities.
LatestUpdate has tracked 13 versions of Synology FS3420 firmware, released between October 8, 2025 and October 12, 2026.
This product was recently updated. The next firmware update is expected between October 30, 2026 and December 9, 2026.
Synology typically releases firmware updates for this product approximately every 51 days.
Official Synology FS3420 product page
The Synology FS3420 is a 2U all-flash enterprise NAS built for high-throughput, low-latency workloads such as virtualization and databases. It runs DiskStation Manager and supports high-availability configurations, SSD caching, and enterprise data protection features. It was originally released on June 22, 2026.
The latest firmware version of Synology FS3420 is 7.4.1-90080 Update 1. It was released on October 12, 2026.
Synology FS3420 firmware version 7.4.1-90080 Update 1 includes the following changes: Important notes Your Synology NAS may not notify you of this DSM update because of the following reasons. If you want to update your DSM to this version now, please click here to update it manually. The update is not available in your region yet. The update is expected to be available for all regions within the next few days, although the time of release in each region may vary slightly. Your DSM is working fine without having to update. The system evaluates service statuses and system set...
To update the Synology FS3420 firmware, download the latest version (7.4.1-90080 Update 1) from Synology's website. Follow Synology's installation instructions, which typically involve copying the firmware file to a memory card or connecting via USB. Visit the official Synology product page for download instructions.
You can track Synology FS3420 firmware updates automatically on LatestUpdate.io. We monitor Synology's releases and notify you when new firmware versions are available, so you never miss an update.
We have tracked 13 firmware versions of Synology FS3420. Based on historical patterns, updates are released approximately every 51 days. Synology releases updates to fix bugs, improve performance, and add new features. Track this product on LatestUpdate.io to be notified of future releases.
Synology FS3420 was recently updated. Based on this product's update history, the next firmware update is expected between October 30, 2026 and December 9, 2026.
Yes, Synology FS3420 received a firmware update within the last month. The most recent version is 7.4.1-90080 Update 1.
Synology FS3420 is manufactured by Synology. Visit the official product page for more information.