You may join a meeting on desktop without updating by using the web client
Profile data
Read-only access to your profile, including your license level, display name, and email address.
Delegate profile data
Read-only access to the profile, license level, display name and email addresses of the set of users who have added you as a delegate in Amazon Chime for scheduling meetings.
Scheduling actions
Generate Chime meeting details for you and your delegates including looking up personal meeting IDs, generating new meeting IDs, and retrieving available dial-in numbers.
All data
Allow access to all your Chime data