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Author Topic: TI Nspire CAS+ ---- Is it worth it?  (Read 37633 times)

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Offline Lionel Debroux

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #30 on: March 24, 2011, 02:31:35 am »
ExtendeD worked a bit on the J04 connector in commercial models, indeed. But no JTAG (in standard format) seemed to be available.
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Offline mikehill2003

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #31 on: March 25, 2011, 06:18:53 pm »
Quote from: Lionel Debroux on March 24, 2011, 02:31:35 am
ExtendeD worked a bit on the J04 connector in commercial models, indeed. But no JTAG (in standard format) seemed to be available.

So is a NAND reader our best chance right now?
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Offline critor

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #32 on: March 25, 2011, 06:35:20 pm »
Quote from: mikehill2003 on March 25, 2011, 06:18:53 pm
Quote from: Lionel Debroux on March 24, 2011, 02:31:35 am
ExtendeD worked a bit on the J04 connector in commercial models, indeed. But no JTAG (in standard format) seemed to be available.

So is a NAND reader our best chance right now?


Seems so. Who is skilled enough to try?
I cannot keep the oldest 1.0.3xx and 1.0.4xx CAS+ forever...


- So we need to hard-dump OS 1.0.554 (the most common on production CAS+). I could try, but I'm sure I'll break everything...

- Then we should test soft-exploits to dump the older 1.0.529 OS (early production CAS+) - as I have severall of them.

- Then once the soft-exploits are safe enough, we should try them with the older 1.0.3xx and 1.0.4xx OSes.
The 1.0.4xx OS seems quite similar to 1.0.5xx OSes. I suppose it should work. The 1.0.3xx OS is different and "strange"...
« Last Edit: March 25, 2011, 06:37:08 pm by critor »
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Offline mikehill2003

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #33 on: March 25, 2011, 06:44:22 pm »
If I were to buy a CAS+ on ebay, which is the OS version it would most likely come with?
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Offline bsl

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #34 on: March 25, 2011, 06:47:36 pm »
Quote from: mikehill2003 on March 25, 2011, 06:18:53 pm
So is a NAND reader our best chance right now?
Another choice- if you know someone that works with embedded systems and has the equipment for this
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Offline critor

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #35 on: March 25, 2011, 06:48:59 pm »
Quote from: mikehill2003 on March 25, 2011, 06:44:22 pm
If I were to buy a CAS+ on ebay, which is the OS version it would most likely come with?


Probably 1.0.554 if the CAS+ is manufactured in september or october 2006 (which are the most frequent).

Early production CAS+ manufactured in august or early september 2006 should come with the 1.0.529 OS, but it's much more rare.

Any other version would be collector! :P
« Last Edit: March 25, 2011, 06:49:56 pm by critor »
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Offline DJ Omnimaga

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #36 on: April 03, 2011, 02:57:26 pm »
This would be funny if someone found a sub-1.0 OS version number. I remember when people found OS 0.46 for the TI-84 Plus.
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Offline willrandship

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #37 on: April 03, 2011, 04:17:14 pm »
I doubt we would get that any other way than we got OS 0.46 though, since CAS+s were released to store owners after being deemed "Useable" and therefore worthy of a 1.0
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Offline mikehill2003

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #38 on: April 03, 2011, 04:28:43 pm »
How did you find OS 0.46?
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Offline willrandship

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #39 on: April 03, 2011, 04:31:08 pm »
We got it from TI's site, with an accidental upload when they updated the OS. They fixed it in a few hours, but we got it :)
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Offline mikehill2003

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #40 on: April 03, 2011, 04:34:00 pm »
Wow. They accidentally uploaded a really old version?   :o
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Offline willrandship

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #41 on: April 03, 2011, 04:35:34 pm »
Yep, and it had remnants of external printer support, if I remember correctly :P it was also really buggy.
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Offline critor

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #42 on: April 03, 2011, 05:21:16 pm »
Quote from: willrandship on April 03, 2011, 04:35:34 pm
Yep, and it had remnants of external printer support

Those remnants are also included in OSes 2.21 & 2.22.

They've been removed starting from OS 2.30.




So? Has anyone tried to dump the CAS+ the hardware way?
I'm ok to send a free replacement TI-Nspire CAS+ if you brick it.

I would be glad to do it myself but with such a chip, I've got the kind of iron solder which will probably solder three pins instead of one...
« Last Edit: April 03, 2011, 05:35:29 pm by critor »
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Offline bsl

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #43 on: April 03, 2011, 05:42:00 pm »
The standard trick in soldering microelectronics with a high wattage iron is to
wrap a thin copper wire on the tip of your soldering iron, to make a small
hot contact.
Make it long enough , then cut pieces of the wire shorter and shorter, till its hot enough
to melt the solder.
A solder sucker is the preferred way to eliminate the solder from the nand-board bond.

Update: Check your local electronics hobby store for desoldering tools also.(mention for microelectronics)
 There are inexpensive tools I found at my store .
« Last Edit: April 06, 2011, 10:55:23 pm by bsl »
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Offline mikehill2003

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Re: TI Nspire CAS+ ---- Is it worth it?
« Reply #44 on: April 03, 2011, 07:09:38 pm »
Quote from: bsl on April 03, 2011, 05:42:00 pm
The standard trick in soldering microelectronics with a high wattage iron is to
wrap a thin copper wire on the tip of your soldering iron, to make a small
hot contact.
Make it long enough , then cut pieces of the wire shorter and shorter, till its hot enough
to melt the solder.
A solder sucker is the preferred way to eliminate the solder from the nand-board bond.

Update: Check your local electronics hobby store for desoldering tools also.(mention for microelectronics)
 There are inexpensive tools I found at my store [Radio Shack ]. Is Radio Shack in France ?

You think he should remove the NAND before dumping it?
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