> 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-changelog/m-8.4-multi-coin.md).

# M-8.4(Multi-Coin)

The multi-coin firmware M-8.4 includes the following updates:

* Fixed BTC transaction issues in some specific cases
* Added support for Palm Chain (EVM compatible)
* Lowered the minimum number of characters for passwords to 6 digits
* Added security prompts to highlight important information for users importing/creating a wallet
* Fixed decoding crowdloan transaction issues in Polkadot ecosystem

Tutorial for firmware upgrade:

{% content-ref url="/pages/-MVz-o9g8Dc-vlyVuAZj" %}
[Firmware Upgrade](/getting-started/firmware-upgrading.md)
{% endcontent-ref %}