You all must be aware that my DG800/900 investigations precede the release of the DG2000 model.
As such, it was never guaranteed to work with the new model even if using the same FW.
Rigol did introduce/correct some countermeasures in the FW to make harder the DG900 migration let alone a migration to DG2000.
As I remember there were some members who tried the DG2000 migration with some help from me and by lack of time, interest, etc., I wasn't able to solve their rollback.
Nonetheless, I'm completely sure that a solution can be found. One of these days I might step in to help some ongoing effort but, for now, I don't have time for this quest.