> 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-8.2-multi-coin.md).

# M-8.2(Multi-Coin)

The multi-coin firmware M-8.2 includes the following updates:

* Support SubWallet in Polkadot mode

{% content-ref url="/pages/BjbaYyY18YHSF8B8nSIA" %}
[SubWallet](/3rd-party-wallets/polkadot-wallets/subwallet.md)
{% endcontent-ref %}

* Support Safe Mobile app in iOS client

{% content-ref url="/pages/Fyv2SwzD2UctKwjq26oM" %}
[Safe Mobile App](/3rd-party-wallets/defi-dapp-with-keystone/safe-mobile-app.md)
{% endcontent-ref %}

* Support decoding transaction in Aptos mode

Tutorial for firmware upgrade:

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