> For the complete documentation index, see [llms.txt](https://support.keyst.one/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://support.keyst.one/changelog/keystone-companion-app/v-1.1.0.md).

# V 1.1.0

The Keystone Companion App V1.1.0 includes the following updates:

1\. Keystone Companion App now supports three BTC address formats (BTC Native Segwit, BTC Nested Segwit, BTC Legacy) and also includes additional product optimizations. ([Tutorial](https://support.keyst.one/advanced-features/s%20da%20a))

2\. The issue of BTC address reuse is fixed. 

{% hint style="warning" %}
**Please upgrade Keystone Multi-coin Firmware to M-5.2 or later to activate these new updates.**
{% endhint %}

{% content-ref url="/pages/hU9QiGFpXHXDUknVkRSv" %}
[M-5.2 (Multi-Coin)](/changelog/keystone-changelog/m-5.2-multi-coin.md)
{% endcontent-ref %}

{% content-ref url="/pages/AxNclEX4PKuusYGhWka3" %}
[Three BTC Address Formats Support](/advanced-features/s-da-a.md)
{% endcontent-ref %}