> For the complete documentation index, see [llms.txt](https://pundi.gitbook.io/pundi/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://pundi.gitbook.io/pundi/pundi-aifx/upgrade-instructions/cosmovisor.md).

# Cosmovisor Upgrade Guide v8.5.x

{% hint style="warning" %}
❗️Please note that the current Pundi AIFX Mainnet v8.6.x upgrade, the upgrade height is `19908000`, and the upgrade countdown is [**Countdown Timer**](https://pundiscan.io/pundiaifx/block/countdown/19908000).
{% endhint %}

Here is the guide to Cosmovisor upgrade `fxcored` preparation. This requires you to complete the upgrade preparation after the upgrade proposal is approved and before reaching the upgrade height.