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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