I attempted to download the latest Whatsminer M21S firmware from the following page and upgrade with the WhatsMinerTool:

https://www.whatsminer.com/server/firmware.html?locale=en

My devices came with the following version on them: 20210322.22.REL

When flashing the WhatsMinerTool says successful, but we have no luck.

If anyone has any idea why this is happening or any other firmware files that I could try this would be great.

Additionally, if anyone has any clue how to SSH into one of these that would be great as well.