Hello @Roger Roger,
Thank you for posting your query on Microsoft Q&A.
Based on your description, I understand that you are looking for a step-by-step guide on how to upgrade your Azure AD Connect to the latest version. You can follow the blog linked below, which clearly outlines the steps for upgrading Azure AD Connect and details the checks you should perform before the upgrade, complete with screenshots for each step.
Blog: Upgrade Azure AD Connect
You can refer the MS doc over here: Microsoft Entra Connect: Upgrade from a previous version to the latest
I hope this information is helpful. Please feel free to reach out if you have any further questions.
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Thanks,
Raja Pothuraju.