# Balena Sound bluetooth connection **URL:** \ **Category:** Project help\ **Tags:** bluetooth, raspberrypizero\ **Created:** [September 13, 2019, 7:36pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092 "2019-09-13T19:36:04Z")\ **Posts on this page:** 18\ **Page:** 1
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 13, 2019, 7:36pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/1 "2019-09-13T19:36:04Z")
When i unplug and plug the Pi back in i have to remove it from “My Devices” and then connect to it from scratch or it will error on connection Any idea on how to solve this? ---
**Author:** ![CameronDiver](https://avatars.discourse-cdn.com/v4/letter/c/2acd7d/32.png) [@CameronDiver](https://forums.balena.io/u/CameronDiver)\ **Post date:** [September 13, 2019, 7:53pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/7 "2019-09-13T19:53:26Z")
What is the error that you encounter when this happens? I’ve reached out to the balena sound author to see if this is something they’ve seen. ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 14, 2019, 6:56am UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/9 "2019-09-14T06:56:10Z")
On my phone i have to remove the pi from the list of previous Bluetooth devices and search for it again. If I try to just connect my phone says “Connection failed make sure “DEVICE” is on and within range” ---
**Author:** ![chrisys](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/chrisys/32/1731_2.png) [@chrisys](https://forums.balena.io/u/chrisys)\ **Post date:** [September 18, 2019, 8:46am UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/12 "2019-09-18T08:46:14Z")
Hey @mcmuffindk welcome to the forums and thanks for trying the project. We’ve seen this before, and it has been resolved in balenaOS versions 2.38 and higher. I’m guessing as you’re still seeing it now that you’re running a Raspberry Pi Zero as the current version of balenaOS on the dashboard is 2.32 which exhibits this problem; other Pis have more recent OS versions available. If that is the case you can work around this by downloading the latest OS for the Pi Zero from staging: [https://dashboard.balena-staging.com/login](https://dashboard.balena-staging.com/login) If you combine a download of `config.json` from the normal dashboard with the OS download from staging, you should be able to get it working. You can flash the staging OS to your SD card, then plug it back into your computer and replace the `config.json` file within the `resin-boot` partition with the one downloaded from your app on the production dashboard. I hope this helps! ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 4:50pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/15 "2019-09-19T16:50:12Z")
Thanks for the help @chrisys I managed to flash the staging os to the Pi and it boots up, but won’t download the latest release. Can i manually do this or is there an workaround? ---
**Author:** ![zvin](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zvin](https://forums.balena.io/u/zvin)\ **Post date:** [September 19, 2019, 4:57pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/16 "2019-09-19T16:57:27Z")
Do you see any error? ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 5:00pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/17 "2019-09-19T17:00:00Z")
@zvin no errors ---
**Author:** ![zvin](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zvin](https://forums.balena.io/u/zvin)\ **Post date:** [September 19, 2019, 5:01pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/18 "2019-09-19T17:01:07Z")
What do you see on the dashboard? ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 5:04pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/19 "2019-09-19T17:04:06Z")
[@zvin](https://forums.balena.io/u/zvin) everything looks normal [![Dashboard](https://global.discourse-cdn.com/balena/original/2X/5/57d7fec90b9c5ecb0c9dbb3c4e162270032f934e.png)](https://global.discourse-cdn.com/balena/original/2X/6/6fdddbe58714eb86a40432744ad4ad9cdc46792b.png "Dashboard.PNG") ---
**Author:** ![zvin](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zvin](https://forums.balena.io/u/zvin)\ **Post date:** [September 19, 2019, 5:12pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/20 "2019-09-19T17:12:47Z")
@mcmuffindk What do you see on the Releases page? ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 5:42pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/21 "2019-09-19T17:42:32Z")
[@zvin](https://forums.balena.io/u/zvin) this is what i see [![Releases](https://global.discourse-cdn.com/balena/original/2X/f/ff243b1310cf113e4b8122cd9e871553953dbc83.png)](https://global.discourse-cdn.com/balena/original/2X/9/9a0e88490687ab91e5bf3ecfe502fb2a87552aac.png "Releases.PNG") ---
**Author:** ![zvin](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zvin](https://forums.balena.io/u/zvin)\ **Post date:** [September 19, 2019, 5:46pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/22 "2019-09-19T17:46:21Z")
Interesting, could you please enable support access for this device? ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 5:48pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/23 "2019-09-19T17:48:16Z")
@zvin yes, the uuid is `bb6a1e862dacd20ede141748bb36cfe7` ---
**Author:** ![zvin](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zvin](https://forums.balena.io/u/zvin)\ **Post date:** [September 19, 2019, 5:51pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/24 "2019-09-19T17:51:01Z")
Thanks, I’m having a look. ---
**Author:** ![zvin](https://avatars.discourse-cdn.com/v4/letter/z/a5b964/32.png) [@zvin](https://forums.balena.io/u/zvin)\ **Post date:** [September 19, 2019, 5:55pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/26 "2019-09-19T17:55:52Z")
The supervisor is hitting an error that prevents it from updating the application. The error is a missing `/mnt/boot/config.txt` file. Did you remove it? Did it have anything special in it? If not, I can put a standard rpi1 config.txt in there. ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 6:01pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/27 "2019-09-19T18:01:31Z")
@zvin i only made the changes from the Balena-Sound guide for using the pHat DAC: `RESIN_HOST_CONFIG_dtparam` = `"i2c_arm=on","spi=on","audio=off"` and `BALENA_HOST_CONFIG_dtoverlay` = `hifiberry-dac` But you are more than welcome to put a new config.txt file in there ---
**Author:** ![dfunckt](https://sea2.discourse-cdn.com/balena/user_avatar/forums.balena.io/dfunckt/32/56_2.png) [@dfunckt](https://forums.balena.io/u/dfunckt)\ **Post date:** [September 19, 2019, 6:34pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/37 "2019-09-19T18:34:57Z")
I added an empty config.txt and the device applied the changes successfully and rebooted. It now downloads the new release. Let us know if you need further help. ---
**Author:** ![mcmuffindk](https://avatars.discourse-cdn.com/v4/letter/m/85f322/32.png) [@mcmuffindk](https://forums.balena.io/u/mcmuffindk)\ **Post date:** [September 19, 2019, 6:36pm UTC](https://forums.balena.io/t/balena-sound-bluetooth-connection/32092/39 "2019-09-19T18:36:46Z")
Thank you! I see the Pi is downloading the release