SECMP0007 Firmware updates to IHDs and PPMIDs

Proposer Robert Williams
Lead Analyst Joe Hehir
Date raised 01/03/2016
StagePending Implementation
Implementation date See link in the latest update field below.
Latest update On 27 October 2020, the Authority approved this modification. For information on the implementation approach, please visit our news page here.

What is the issue?

Currently Over-The-Air (OTA) firmware updates via the DCC can only be made to the Communications Hub, Electricity Smart Metering Equipment (ESME) and Gas Smart Metering Equipment (GSME). The Proposer of this modification seeks to address the lack of capability to update firmware for other mandated Home Area Network (HAN) Devices.

There is currently no way to execute OTA firmware updates to mandated HAN Devices, specifically In-Home Displays (IHDs), Prepayment Meter Interface Devices (PPMIDs) and HAN Connected Auxiliary Load Control Switches (HCALCSs).

What is the solution?

This modification proposes a combination of two OTA firmware update methods; one for PPMIDs and another for HCALCS. IHDs are not longer in scope.

OTA method for PPMIDS
A ZigBee OTA delivery mechanism will be used to deliver firmware images to PPMIDs. This method introduces the combined distribution and activation of the firmware updates into a single new Service Request (SR). The PPMID will manage and distribute the notification to the Service User upon activation of the firmware.

OTA method for HCALCSs
The HCALCS will utilise the existing OTA firmware update procedure used by ESME and GSME. This requires a distinct separation between the distribution and activation of the firmware image. This will be achieved by re-using existing SRs 11.1 ‘Update Firmware’ and 11.3 ‘Activate Firmware’ respectively.

Who is impacted?

Large Suppliers
Small Suppliers
Other SEC Parties
PPMID and HCALCS manufacturers

What SEC documents are affected?

Schedule 8 'Great Britain Companion Specification'
Schedule 9 'Smart Metering Equipment Technical Specifications'
Schedule 10 'Communications Hub Technical Specifications'
Schedule 11 'TS Applicability Tables'
Appendix E 'DCC User Interface Services Schedule'
Appendix R ‘Common Testing Scenarios Document’
Appendix AB 'Service Request Processing Document'
Appendix AD 'DCC User Interface Specification'
Appendix AF 'Message Mapping Catalogue'


01 Mar 2016
Modification Proposal raised
04 Apr 2016
Working Group meeting
16 May 2016
Working Group meeting
10 Jun 2016
17 May 2017
First DCC Preliminary Assessment
16 Jun 2016
Working Group meeting
03 Jul 2017
Working Group meeting
17 Oct 2017
08 Nov 2017
First Refinement Consultation
29 Jan 2018
Firmware workshop
01 Mar 2018
Working Group meeting
11 Apr 2018
Update provided to the SSC
05 Jul 2018
11 Apr 2019
Second DCC Preliminary Assessment
24 Jul 2018
Working Group meeting
24 Jul 2018
Working Group meeting
01 May 2019
Working Group meeting
24 May 2019
17 Jun 2019
Second Refinement Consultation
07 Aug 2019
Working Group meeting
09 Oct 2019
Update provided to the SSC
06 Nov 2019
Working Group meeting
19 Dec 2019
Working Group meeting
06 Feb 2020
Impact Assessment requested
23 Jul 2020
Update provided to the TABASC
28 Jul 2020
Working Group meeting
06 Aug 2020
Update provided to the TABASC
14 Aug 2020
Modification Report approved by the Panel
17 Aug 2020
07 Sep 2020
23 Sep 2020
Change Board vote
27 Oct 2020
Authority decision

Modification documents

SECMP0007 - Authority Decision on CTSD implementation date
SECMP0007 - Request to change the CTSD implementation date
SECMP0007 Authority decision
SECMP0007 Conclusions Report v1.0
SECMP0007 Modification Report Consultation responses
SECMP0007 Modification Report Consultation
SECMP0007 Modification Report v1.0 (Final)
SECMP0007 Request for Information responses
SECMP0007 DCC Impact Assessment
SECMP0007 Request for Information
SECMP0007 business requirements v1.31
SECMP0007 legal text v1.0
SECMP0007 DCC design note
SECMP0007 second Refinement Consultation responses
SECMP0007 second Refinement Consultation
SECMP0007 second DCC Preliminary Assessment
SECMP0007 first Refinement Consultation responses
SECMP0007 first Refinement Consultation
SECMP0007 first DCC Preliminary Assessment
SECMP0007 Working Group summaries
SECMP0007 Modification Proposal
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