Field Notice: FN74418 - Cisco Remote PHY Device Software Upgrade to Release 10.9.1 Required Due to Cable Labs Certificate - Workaround Provided

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Updated:August 27, 2026
Document ID:FN74418

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Low
Impact Rating:
Low
First Published:
2026-Aug-27
Last Published:
2026-Aug-27
Revision:
1.0
Cisco Bug IDs:

Notice

THIS FIELD NOTICE IS PROVIDED ON AN "AS IS" BASIS AND DOES NOT IMPLY ANY KIND OF GUARANTEE OR WARRANTY, INCLUDING THE WARRANTY OF MERCHANTABILITY. YOUR USE OF THE INFORMATION ON THE FIELD NOTICE OR MATERIALS LINKED FROM THE FIELD NOTICE IS AT YOUR OWN RISK. CISCO RESERVES THE RIGHT TO CHANGE OR UPDATE THIS FIELD NOTICE AT ANY TIME.

Products Affected


Affected Product Name Description Comments
IRPD-1X2-PKEY= ^Remote Phy Device 1X2 Compatible with iNODE. 55-1 and 2 OOB  
IRPD-1X2= ^Remoty Phy Device 1X2 Compatible with iNODE  
RPD-1X2-PKEY= ^Remote Phy Device 1X2, 55-1 and 55-2 Support  
RPD-1X2= ^Remote Phy Device 1X2  
RPHYSHELF ^Remote PHY Compact Shelf Configured PID  
RPHYSHELF_3X6 Remote PHY Compact Shelf 3x6 Configured PID  
RPHYSHELF_6X12 Remote PHY Compact Shelf 6x12 Configured PID  




Defect Information


Defect IDHeadline
CSCvf34445There were no defects filed with this field notice at the time of publication.

Problem Description


Due to the scheduled expiration of the certificate used for Cisco Remote PHY Device (RPD) and Cisco Smart PHY 300 and 600 Shelves releases 10.9 and earlier, all software upgrade and downgrade operations to these versions will be disabled effective July 19, 2027.


Background


The certificate used for Cisco RPD releases 10.9 and earlier is set to expire on July 19, 2027. Following this expiration date, Cisco RPD and Cisco Smart PHY 300 and 600 Shelves will not upgrade or downgrade to Cisco RPD Release 10.9 or earlier. A newer certificate was used to sign Cisco RPD releases 10.9.1 and later and these versions continue to work. Cisco cBR-8 Converged Broadband Router releases 17.12.1z4 and 17.15.1z are compatible with Cisco RPD Release 10.9.1.


Problem Symptom


Cisco RPD, Cisco Smart PHY 300 and 600 Shelves upgrades or downgrades to Cisco RPD Release 10.9 or earlier fail.


Workaround/Solution


Any upgrade or downgrade of Cisco RPD or of Cisco Smart PHY 300 or 600 Shelves must be to Cisco RPD Release 10.9.1 or later.


How to Identify Affected Products


This issue affects all Cisco RPD and Cisco Smart PHY 300 and 600 Shelves products.


Revision History


VersionDescriptionSectionDate
1.0Initial Release—2026-AUG-27

For More Information

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