Thanks Mike, the info is helpful, but unfortunately the UCP solution throws an error 46.
I've tried with prefix, without, with other like $01$, $02$, etc... Always the same...
I'm thinking it may be related to the error 29 I'm getting while trying to simply print the data to screen.
Anyway, for now, I was able to reach out to the server admin so that I can receive the data uncompressed.
thanks