I don't have experience of the Bachmann chips but, unfortunately, it
sounds like Bachmann have used the same version ID in both chips.
Sorry, there's no other way than physically identifying the chips. This
problem isn't specific to DecoderPro/SPROG.

For the ESU, it may be that ESU have recently released a new version
and DecoderPro hasn't caught up yet. Do you know which decoder is
fitted? You should be able to select a similar decoder and program most
CVs. The important ones like adress are common across all decoders.

Andrew

--- In sprog-dcc@..., "nacledre" <alf.fantham@...> wrote:
>
> Had a quick look at faq, but not found an answer.
>
> E.g. if I read info from a Bachmann chipped loco SPROG gives me both
> options as the fitted chip. How do I easily identify the correct one?
> Have also tried with an ESU chipped loco & that returns "Found mfg
> 151(ESU) version 88; no such decoder defined"
>