# Adding a legacy Sonos s1 amp to Homey \> error in device adding process \> Cannot read properties of undefined (reading 'map') **URL:** \ **Category:** Devices\ **Tags:** homey-pro\ **Created:** [February 25, 2024, 9:46pm UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909 "2024-02-25T21:46:38Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![James\_Wyatt](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/james_wyatt/32/33967_2.png) [@James\_Wyatt](https://community.homey.app/u/James_Wyatt)\ **Post date:** [February 25, 2024, 9:46pm UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/1 "2024-02-25T21:46:38Z")
![image](https://us1.discourse-cdn.com/flex025/uploads/athom/original/3X/6/d/6d416007feada11d4d4d3e89f37d8b5a1fc8eab8.png) Hi, I bought 4 old Sonos Amps, s1. I have them working via the Sonos App. Now, i like to include them as a device in Homey, via the Sonos Homey App. But… i get stuck in the adding process. The error: Cannot read properties of undefined (reading ‘map’) is displayed. i tried - turning all amps off and on. - adding them via the homey app, and online environment. My question is: Does anyone recognize this error? any workarounds possible? Kind regards, ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [February 26, 2024, 6:39am UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/2 "2024-02-26T06:39:19Z")
There are plenty of issues with the recent update of the Sonos app mentioned here on the forum. ---
**Author:** ![burrikido](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/burrikido/32/102092_2.png) [@burrikido](https://community.homey.app/u/burrikido)\ **Post date:** [February 27, 2024, 10:02am UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/3 "2024-02-27T10:02:24Z")
Is there a way to revert to the previous one? Sorry if it has been asked ---
**Author:** ![robertklep](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/robertklep/32/160628_2.png) [@robertklep](https://community.homey.app/u/robertklep)\ **Post date:** [February 27, 2024, 10:04am UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/4 "2024-02-27T10:04:46Z")
It’s only possible if you have a Homey Pro 2023 and a full _local_ backup that contains the previous version of the app. ---
**Author:** ![burrikido](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/burrikido/32/102092_2.png) [@burrikido](https://community.homey.app/u/burrikido)\ **Post date:** [February 27, 2024, 10:47am UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/5 "2024-02-27T10:47:12Z")
Thanks, Robert. That’s the part I missed: The backup 😃 The good thing is that they just released a test app for Sonos, and it looks like they fixed the issues. The downside is that you’ll need to reinstall the speakers. ---
**Author:** ![James\_Wyatt](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/james_wyatt/32/33967_2.png) [@James\_Wyatt](https://community.homey.app/u/James_Wyatt)\ **Post date:** [February 27, 2024, 6:58pm UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/6 "2024-02-27T18:58:11Z")
Where would we be able to find this test app or is it better to wait a few days for the real app to arrive? ---
**Author:** ![burrikido](https://sea1.discourse-cdn.com/flex025/user_avatar/community.homey.app/burrikido/32/102092_2.png) [@burrikido](https://community.homey.app/u/burrikido)\ **Post date:** [February 27, 2024, 7:25pm UTC](https://community.homey.app/t/adding-a-legacy-sonos-s1-amp-to-homey-error-in-device-adding-process-cannot-read-properties-of-undefined-reading-map/104909/7 "2024-02-27T19:25:16Z")
[Here you go](https://homey.app/en-ro/app/com.sonos/Sonos/test/), James: To be honest, I didn’t had the patience to wait for the official release. It F#ucked up my system and I wanted a fix. After 8 hours of use, I can tell you that all’s good