I've uploaded the service advisory on the Lens control - here it is as an attachment. It says that the problem might occur when an AFD lens is fitted to the Rollei lens adapter and operated with the LensControl S. Mostly people use lenses in electronic shutters or the three Rollei lenses with large image circles fitted to the lens adapter - the 90mm APO macro, 120mm Macro, and the 150mm APO macro bellows lens so probably getting an update isn't a real necessity, but good to know about this. Some units will actually operate fine with the AFD lenses and the bulletin explains how to identify which is which.
Anyhow getting yours updated is not a bad thing at all and good luck with your sale.
and p.s. as far as I know you can still get some things serviced at Rollei / Hensel but Onick has retired.