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Kelson
Enthusiast II
September 13, 2022
Answered

Sonos V8.4 / Bridge Replacement

  • September 13, 2022
  • 12 replies
  • 259 views

I have a large(ish) Sonos system locked down at 8.4 (because I still use CR100 controllers). The bridge has finally died so I have temporarily wired one of my ZP Amps as a bridge. Is it possible to buy a boost and use it, or will it need me to upgrade the system version (which obviously I cannot do).

I don’t want to accidentally trash the CRs by adding a component that needs a higher software version.

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Best answer by ratty

There’s no way you could add a Boost. It would ship with a much more recent software version (of S2). 

Are you sure the Bridge itself has died? Normally it’s the power supply which gives up. If you have access to a meter a health PSU should put out a steady 5.1V or thereabouts. There are third party compatible PSUs available.

If the Bridge is really a goner your choices are to keep another device wired instead or to switch to WiFi (‘wireless’) mode.

12 replies

ratty
rattyAnswer
September 13, 2022

There’s no way you could add a Boost. It would ship with a much more recent software version (of S2). 

Are you sure the Bridge itself has died? Normally it’s the power supply which gives up. If you have access to a meter a health PSU should put out a steady 5.1V or thereabouts. There are third party compatible PSUs available.

If the Bridge is really a goner your choices are to keep another device wired instead or to switch to WiFi (‘wireless’) mode.

    KelsonAuthor
    Enthusiast II
    September 13, 2022

    Thanks for that, just about to check the PSU. I have an alternative that gives 5.5v / 2.2a which should be within tolerance. There are second hand bridges out there, but not sure if they are also software version hooked, or independent.

    ratty
    ratty
    September 13, 2022

    The market has been awash with Bridges for years. For a time they were given away with every speaker purchase. 

    Finding one with exactly the same ancient firmware version could be well nigh impossible. Even if it was at v8.4 then the process of adding it would require registration with your Sonos account which could risk a firmware update. 

    KelsonAuthor
    Enthusiast II
    September 13, 2022

    Yes, good point ratty. I have aquired a number of CR100s and used bits of them to keep the old ones working and as you say, even with 8.4 versions, it does not seem possible to hook them up. Still, an old bridge may be useful depending on whats failed on mine, unless its the psu, in which case happy days.

    KelsonAuthor
    Enthusiast II
    September 13, 2022

    So checking the PSU it gives a fluctuating value between 4.99 and 5.07 volts (might be because the meter does not give a load but I don’t think so), so I’m going to try another PSU and see if it works.

    ratty
    ratty
    September 13, 2022

    The voltage should be steady. Fluctuation suggests it’s an ex-PSU.

    KelsonAuthor
    Enthusiast II
    September 13, 2022

    Ok, have now tried it with a different PSU and believe the bridge is a gonna. A couple of days ago, when the Sonos system stopped working, I discovered that I had a network (broadcast) storm. I’d had one years ago and bought a new managed switch to sort the issue as I needed a wired speaker in the garage block plus wireless in the office.

    So first thing I did was disconnect the garage wired speaker and the storm stopped, but could not restart the Sonos system. Its taken a while, but got around to substituting the ZP for the bridge and the Sonos system came back to life (after a little faffing around).

    Having put a new PSU on the bridge and reconnected it, bang, another broadcast storm so I’m thinking the bridge is toast. I’m going to see if I can get one of the other Sonos components hooked up as a bridge for a more permanent solution. I may have to buy a couple more manage switches as I run the Sonos over 3 buildings.

    ratty
    ratty
    September 13, 2022

    Hold on. If you have another wired Sonos device and resurrecting a functional Bridge triggered a storm you have an STP problem, not a Bridge problem.

    Is the Bridge the sole wired Sonos device or not?

    KelsonAuthor
    Enthusiast II
    September 13, 2022

    Bingo, actually managed to find a use for my old ZP80 that got left behind at version 8.2, it will act as a bridge no problem, just can’t be used to play music without the update (which is impossible to do).

    ratty
    ratty
    September 13, 2022

    The v8.2 ZP80 may cause controllers to nag remorselessly. 

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