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Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot Code

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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby Hamza.S » 28 Mar 2018, 12:42

Depuis quand TI donne des explications lorsqu'il décide de bloquer des choses ?
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby edgar13 » 08 Jun 2019, 17:48

Ma calculatrice fait le programme mais l'OS reste version 5.3.5.0024! :~o :~o :#fou#: :#fou#:
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby critor » 08 Jun 2019, 17:51

Il faut envoyer l'OS juste après avoir effectué la modification.
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby edgar13 » 09 Jun 2019, 12:37

Merci!! :D
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby TheOrangeCat » 22 Jul 2019, 13:22

Can you use the tool, for example, on BOOT code 5.3.6 on TI 83 Premium CE Python Edition? I'm planning on buying one (mainly because of faster flash).
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby critor » 22 Jul 2019, 13:24

The tool should work.
But OSes older than 5.3.6 compatibility is unknown.
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby TheOrangeCat » 22 Jul 2019, 13:32

Thanks! To test the compatability when I buy the calc, I will dump it's ROM and try it in CEmu.
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby critor » 22 Jul 2019, 13:55

Versions 5.3.6+ work in CEmu.

But this doesn't prove that older versions won't have problems on the TI-83 Premium CE Edition Python.

For example, installing versions older than 5.1.5 on TI-83 Premium CE
(or TI-84 Plus CE)
with Boot Code 5.1.5+ is a first step into bricking them.
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby TheOrangeCat » 23 Jul 2019, 09:20

It could brick it but won't reusing the tool fix it? I do remember that installing an OS too old does set it to a high value but can the tool be used again to to set it to a normal value? I mean, I don't need to use the exam mode and not that I will use the Asm84CEPrgm token so I will probably buy 83PCE Python Edition anyway.
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Re: Downgrade TI-83 Premium CE en 5.3.0 peu importe le Boot

Unread postby critor » 23 Jul 2019, 10:56

If the new OS is working, yes you can reuse the tool.
But it's not been designed to deal with unexpected issues.
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