Re: TI-H: Re: TI-89 ROM "downgrading"
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Re: TI-H: Re: TI-89 ROM "downgrading"
How do you check for HW2?
On Mon, 22 Nov 1999 20:48:53 -0500 "Bryan Rabeler"
<rabelerb@pilot.msu.edu> writes:
>
> If its a TI-89 with HW2 (most likely it is), then you can't
> downgrade the
> ROM past 1.05.
>
> Bryan
>
> ----- Original Message -----
> From: "Noah R Deneau" <noahd@juno.com>
> To: <ti-hardware@lists.ticalc.org>
> Sent: Monday, November 22, 1999 8:23 PM
> Subject: TI-H: TI-89 ROM "downgrading"
>
>
> >
> > A friend of mine recently bought a TI-89 with ROM 1.05, but of
> course he
> > wanted 1.00 for all the games. So I tried to downgrade his ROM
> from my
> > calc with the "Send/Recieve Product Code." Should that work? It
> didn't.
> > I tried sending to/from many 89s but the sending calc got a
> checksum
> > error each time and the reciever always locked up. Any ideas?
> >
> > Thanks,
> > Noah
> >
> >
> >
> >
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>
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