# ARC: audio interruptions are noticeable, ref#92

**URL:** <https://arcam.discourse.group/t/arc-audio-interruptions-are-noticeable-ref-92/136>\
**Category:** Issues\
**Tags:** firmware, arc\
**Created:** [August 27, 2020, 8:17am UTC](https://arcam.discourse.group/t/arc-audio-interruptions-are-noticeable-ref-92/136 "2020-08-27T08:17:56Z")\
**Posts on this page:** 1\
**Showing post:** 16

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**Author:** ![jvs1](https://yyz2.discourse-cdn.com/free1/user_avatar/arcam.discourse.group/jvs1/32/10_2.png) [@jvs1](https://arcam.discourse.group/u/jvs1)\
**Post date:** [September 12, 2020, 8:35pm UTC](https://arcam.discourse.group/t/arc-audio-interruptions-are-noticeable-ref-92/136/16 "2020-09-12T20:35:21Z")

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I found a way to block SA30 firmware upgrades, refer to post below.

> [@How to block SA30 firmware updates](https://arcam.discourse.group/t/how-to-block-sa30-firmware-updates/155):
>
> This post describes how to block the (automatic) firmware update function of the SA30 by using the [DNS blocking](https://en.wikipedia.org/wiki/DNS_blocking) technique. There might be various reasons to block these firmware updates and stick to an old firmware version. The SA30 contacts an Arcam host on the internet which serves the firmware updates. DNS blocking makes it impossible for the SA30 to retrieve the ip address of this Arcam host. The free DNS blocking software used in this article is [AdGuard Home](https://adguard.com/en/adguard-home/overview.html). There are other free alternati…

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