Firmware updates (via VRM) of parallel MPII

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sean asked May 9, '23

Firmware updates (via VRM) of parallel MPII

My home ESS systems consists of 2x parallel MPII 48/3000, Colour control, Fronius Primo 8.2 and ET112 and has worked without issue for years.

Current Fw is 4.3 - newest, as indicated via VRM is 5.02

I'm generally not a fan of updating just for the sake of it, but I'm experiencing some unexpected behaviours when adding a second ET112 to meter another array, so I'm pondering updating the pair of MPIIs to latest.

Here's the question/s:

a, if I carry out the Fw update via VRM, will both MP devices be updated, or just the master ?

b, will the current MP configuration be lost during the process .

vrm firmware update

2 |3000

Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

Modifications Space

Node Red Space

Answer 1 · 2023-05-09T10:17:04Z

nickdb answered · May 09, 2023 at 10:17 AM

Best you start with the docs which are self-explanatory

https://www.victronenergy.com/live/venus-os:remote_ve.bus_firmware_updates

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2 |3000

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sean commented · May 09, 2023 at 10:31 AM

I've obviously read that, numerous times, but there is no mention of updating parallel inverters, and if indeed if a VRM Fw update will update one, or both - hence my question.

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nickdb ♦♦ sean commented · May 09, 2023 at 10:33 AM

Pretty much stated in the opening paragraphs:

This procedure includes migration of the settings.

There is no limitation on the type of system: single unit systems, parallel, split-phase, three-phase and also large systems of 6, 9 and more inverters can all be updated remotely using this feature.

All the good info hides in plain sight ;)

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sean nickdb ♦♦ commented · May 09, 2023 at 10:49 AM

I did read that, and I accept your understanding of it, but ..... from what I can see VRM doesn't acknowledge there being parallel inverters attached, unless there is more info here hiding in plain sight.

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screenshot-20230509-105145-chrome.jpg (181.8 KiB)

nickdb ♦♦ sean commented · May 09, 2023 at 11:14 AM

If you look in device list, it will show the "logical" inverter as being a parallel set.

It is designed to update all system types:

So VRM knows the configuration. A lot of work was put into this, I can assure you it works. I can also tell you it does occasionally go wrong, but that's rare, mainly when the procedure isn't followed.

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screenshot-2023-05-09-at-131359.png (96.6 KiB)

thanar sean commented · May 09, 2023 at 11:18 AM

Did you reach the following prompt?

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screenshot-2023-03-29-at-201328.png (958.2 KiB)

sean thanar commented · May 09, 2023 at 11:27 AM

That's just the standard notification, it doesn't explicitly mention parallel inverters, I'm simply seeking a confirmation that the VRM Fw update process is aware of parallel installations before I commit.

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Answer 2 · 2023-05-09T10:19:00Z

Paul B answered · May 09, 2023 at 10:19 AM

I would recommend that you update using the vrm only, if you use the mk2 or mk3 then you will need to manually resetup all settings and assistants, if used.

if you use the vrm then normally both will be updated to the latest fw - and the original settings will be returned to the system as long as you follow the correct update procedures.

note a update file will be downloaded to your laptop open this file by double clicking on it and the file will be converted to the new format, then upload the new file to the two inverters, via the vrm

only use a standard microsoft system on windows 10 or latter (preferable the latter)

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Attachments: Up to 8 attachments (including images) can be used with a maximum of 190.8 MiB each and 286.6 MiB total.

sean commented · May 09, 2023 at 10:36 AM

Thank you, I'm somewhat cautious of doing this just yet, primarily as (other than yourself here) there is apparently nothing mentioned within any online documentation that describes how, if at all, updating multiple inverters differs from that of updating a single one - I've updated and installed numerous singles without issue.

At some point, in the absence of additional info I might just suck it and see, but I'd like to be forearmed.

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