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So do you want it to upgarde from old version? well, please you go ahead to upgrade to the latest version via ijoomla installer, without upgrade one by one, if you got something wrong, please let me know then.
Thanks for the offer, but I am totally fine with installing myself, in deed, it would be easier for me (and you) to do it myself.
FYI, I need this to clone a "private" version and update that to use it as a test environment for the translation version I am helping out with. Hence, I would need to be self-sufficient as repetition will be needed.
Thus, juts access to versions between 4.0RC2 to current version is what I need.
Test it on newest version, just relax and install to the latest version directly, it will be safe.. download the latest version pacjage from "My account" page.