That's actually what the previous jb did, only it did it from an official signed update script that ran like a proper update after the misc. .bin parsing

[Said update then failed horribly because obviously we didn't bundle the patches & stuff, so the patching process in itself failed, but the tarball had already been unpacked, so we were good]. Turns out we didn't even need to go there at all on fw 3.x ^^.
EDIT: USBNet updated in the Fonts thread.

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