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Author Topic: Have you seen BSOD on nspire before?  (Read 8709 times)

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Offline zweb

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Re: Have you seen BSOD on nspire before?
« Reply #15 on: August 22, 2013, 09:55:33 am »
Quote from: critor on August 22, 2013, 09:22:20 am
The TI-Nspire Color does already have a CX Boot2, as it is a TI-Nspire CX prototype.
But its Boot1 uses the developper keys instead of the production ones.

So the Boot1 will reject all production TI-Nspire CX Boot2 and OSes, meaning probably everything you've got, and this has nothing to do with the manuf.
Are you sure that the key is stored in Nor(boot1) but not somewhere else(ASIC?)
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Offline critor

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Re: Have you seen BSOD on nspire before?
« Reply #16 on: August 22, 2013, 10:05:14 am »
On ClickPad/TouchPad, they were stored in the Boot1.
I haven't investigated this on CX/CM yet.

As far as I can tell from various experimentations, it seems that the Boot1, which is common to CX and CM models, knows about both CX and CM keys, but adds a model check for running the Boot2 and Diags.

But the Boot2 only knows about the model specific keys.

That's why for example you cannot directly run a CM Boot2/Diags on your TI-Nspire CX.

But if you flash the TI-Nspire CM manuf splashscreen (which have no header with the model ID unlike the Boot2/Diags) on a TI-Nspire CX, the Boot1 will accept to load the splashscreen and the Boot2 will reject it.


Edit: Sorry for the delay, but here is a better picture of the TI-Nspire Color prototype external Flash-NOR chip:

It seems to be a MXIC MX29SL402CBTI-90G.

Reflashing this with a patched TI-Nspire CX Boot1 will let you do everything you've allways dreamed of ;)
« Last Edit: August 22, 2013, 12:08:07 pm by critor »
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Offline zweb

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Re: Have you seen BSOD on nspire before?
« Reply #17 on: August 22, 2013, 06:49:59 pm »
Quote from: critor on August 22, 2013, 10:05:14 am
On ClickPad/TouchPad, they were stored in the Boot1.
I haven't investigated this on CX/CM yet.

As far as I can tell from various experimentations, it seems that the Boot1, which is common to CX and CM models, knows about both CX and CM keys, but adds a model check for running the Boot2 and Diags.

But the Boot2 only knows about the model specific keys.

That's why for example you cannot directly run a CM Boot2/Diags on your TI-Nspire CX.

But if you flash the TI-Nspire CM manuf splashscreen (which have no header with the model ID unlike the Boot2/Diags) on a TI-Nspire CX, the Boot1 will accept to load the splashscreen and the Boot2 will reject it.


Edit: Sorry for the delay, but here is a better picture of the TI-Nspire Color prototype external Flash-NOR chip:

It seems to be a MXIC MX29SL402CBTI-90G.

Reflashing this with a patched TI-Nspire CX Boot1 will let you do everything you've allways dreamed of ;)
Ok, I will have a try after fixing my CM-C prototype.(I'm also trying to find a PLT-FHH1 prototype and read the flash with my programmer.)
By the way, the guy who has a 64MB Clickpad told me, nPal works well!
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Offline critor

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Re: Have you seen BSOD on nspire before?
« Reply #18 on: August 22, 2013, 06:55:48 pm »
Quote from: zweb on August 22, 2013, 06:49:59 pm
Ok, I will have a try after fixing my CM-C prototype.
And I hope you'll succeed in both :)

Quote from: zweb on August 22, 2013, 06:49:59 pm
(I'm also trying to find a PLT-FHH1 prototype and read the flash with my programmer.)
That would be great too.
Are you looking for a working prototype?

My PLT-FHH1 has no OS and remains stuck in the shell. But Adriweb has a PLT-SHH1 which fully works :)

Quote from: zweb on August 22, 2013, 06:49:59 pm
By the way, the guy who has a 64MB Clickpad told me, nPal works well!
Great!
Could he take a picture of the back with the serial so that we can understand what kind of prototype it is?
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Offline zweb

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Re: Have you seen BSOD on nspire before?
« Reply #19 on: August 22, 2013, 07:03:29 pm »
It seems that all PLT-FHH1/SU1 comes with a erased flash? Or they just erased the boot script so the OS is still there? This is what I want to find out.Luckily, I know many people who sell prototype nspire in China, I have told them to help me find one.
I will ask him to take a picture of the serial number.
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Offline critor

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Re: Have you seen BSOD on nspire before?
« Reply #20 on: August 22, 2013, 07:09:39 pm »
It seems so - the Datamath museum and me both have PLT-FHH1/SU1 prototypes which won't boot into the OS and remain stuck in the shell.

The Datamath museum and Adriweb both have PLT-SHH1 prototypes which do include the OS.


But with so few prototypes, it might be to soon to jump to conclusions ;)
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