Is it possible to add this dump to the http://chdk.wikia.com/wiki/For_Developers page list?
It's possible to add the camera to the DIGIC 4+ list on that page.
This camera is not yet supported, right?
No, it's not supported.
PSS I found this dump already in https://drive.google.com/drive/folders/0B08pqRtyrObjZmtJbXlNYk9uWnc, but it is corrupt-archived - I couldn't unpack it. And firmware 100c too (is corrupt-archived).
Both archives are fine, can be extracted without problems. Note that those 7zip files use LZMA2 compression which is not supported by early 7zip extractors.