Looks like you were running firmware version V1.10.1 prior to the mishap. (got your version number from WU).
I've looked at this issue and the Ambient firmware download page is not providing enough information on how to get your station to version 2.0.0.
The downloads offered are only for the 1001 and 1002 models. You had a 1000 and there is no landing page for this older model. Essentially you attempted to install firmware that was not designed for the 1000. It clearly says that it is only for the 1001 and 1002.
Still I don't fault you for not reading the warning. It is a mistake that anyone could make. The firmware should check what is installed and throw up and error message that it is not compatible and not brick the unit. They should at least release a newer version that corrects this. This is common practice today so it is unfortunate to see this occurrence.
But there is a way to navigate the firmware repository (if you know how). I found an undocumented landing directory where all the old WS-1000 firmware are stored and this is undocumented and no link exists to get here:
https://p10.secure.hostingprod.com/@site.ambientweatherstore.com/ssl/easyweather/ws1000/Probably too late now but if I had an old WS-1000 and I wanted to upgrade it I would one by one upgrade in order of what is published in this page I've linked. There are no instructions for this. There are no warnings for this. So proceed at your own risk if you are reading this and you have a WS-1000. Eventually this gets you past version 2.1.2. Therefore I would guess that you can then upgrade to version 2.1.7 which is the first available of the WS-1001/1002.
It is interesting to note that version 2.0.0, 2.0.1 and 2.0.2 are huge in comparison to all prior and afterwards versions. These 3 versions are 19 MB. Every other version prior or afterwards is of size between 700 KB and 800 KB. The interesting part is that this shows that these other firmware versions are incremental. They assume a compatible base of a prior version. It is not until version 2.0.0, 2.0.1 and 2.0.2 that the base is overwritten as only these versions are a full upgrade to the device. There is no need for every version to be a full upgrade...but what is required from a reputable company would have been some safeguard of version checking.
And this is the directory for the 1001 and 1002 firmware (this one is linked on Ambient's website):
https://p10.secure.hostingprod.com/@site.ambientweatherstore.com/ssl/easyweather/ws1001/