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Lifecycle record

SF-F4KFXOS2-4-1-K9 EOL & EOSL Dates

Cisco Firepower Extensible Operating System v2.4.1 - FPR4100

Lifecycle status

End of Support (EOL Completed)

SF-F4KFXOS2-4-1-K9 reached its last date of support on 2023-04-30. Cisco support services are no longer available for this model. Recommended replacement: SF-F4KFXOS2-6-1-K9.

Last checked: 2026-06-16

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EOL & EOSL Dates and Details

End-of-Life Announcement (EOL) 2019-10-31
End of Sale (EOS) 2020-04-30
End of Service Life (EOSL) 2023-04-30
Manufacturer Cisco
Category Software
Product Series Cisco Firepower eXtensible Operating System
Part Number SF-F4KFXOS2-4-1-K9
Model Number SF-F4KFXOS2.4.1-K9
Release Date 2018-05-21
Replacement Part Number SF-F4KFXOS2-6-1-K9
Replacement Product Name Cisco Firepower Extensible Operating System v2.6.1 - FPR4100

Lifecycle Timeline

Recorded lifecycle milestones in date order.

  • Release Date
    2018-05-21
  • End-of-Life Announcement (EOL)
    2019-10-31
  • End of Sale (EOS)
    2020-04-30
  • Last Ship Date
    2020-07-29
  • End of SW Maintenance
    2021-04-30
  • End of Service Contract Renewal
    2022-07-27
  • Last Date of Support
    2023-04-30
  • End of Service Life (EOSL)
    2023-04-30

Additional Information

Support milestones and the official source recorded for this model.

Last Ship Date: HW, License 2020-07-29
End Of New Service Attachment Date: HW 2021-04-30
End Of SW Maintenance Releases Date: HW 2021-04-30
End Of Service Contract Renewal Date: HW 2022-07-27
Last Date Of Support: HW 2023-04-30
Official EOL Notice View Official EOL Documentation

More Cisco Firepower eXtensible Operating System EOL Dates

Part Number Product Name EOL Announcement End of Sale
SF-F4KFXOS2-9-1-K9 Cisco Firepower Extensible Operating System v2.9.1 2021-01-08 2021-07-09
SF-F4KFXS2-11-1-K9 Cisco Firepower Extensible Operating System v2.11.1 2023-06-23 2023-12-22
SF-F4KFXS2-12-1-K9 Cisco Firepower Extensible Operating Sys v2.12.1 for FPR4100 2025-05-20 2025-11-18
SF-F4KFXS2-12-2-K9 Cisco Firepower Extensible Operating Sys v2.12.2 for FPR4100 2025-05-20 2025-11-18
SF-F9K-FXOS2-0-K9 Cisco Firepower Extensible Operating System v2.0 for FPR9300 2019-11-22 2020-05-22
SF-F9K-FXOS2-1-K9 Cisco Firepower Extensible Operating System v2.1 for FPR9300 2018-01-16 2018-07-17
SF-F9KFXOS2-4-1-K9 Cisco Firepower Extensible Operating System v2.4.1 - FPR9300 2019-10-31 2020-04-30
SF-F9KFXOS2-9-1-K9 Cisco Firepower Extensible Operating System v2.9.1 - FPR9300 2021-01-08 2021-07-09
All Cisco Firepower eXtensible Operating System lifecycle dates