« previous next »
Pages: [1]   Go Down

Author Topic: 1st try of hard-dumping the CAS+  (Read 7859 times)

0 Members and 1 Guest are viewing this topic.

Offline critor

  • Editor
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2079
  • Rating: +439/-13
    • View Profile
    • TI-Planet
1st try of hard-dumping the CAS+
« on: April 28, 2012, 08:20:23 pm »
If you hold Home+Enter+P on a TI-Nspire CAS+, you don't get a maintenance menu, no... the calculator just does immediatly remove the OS without prompting! :P

As this prototype based on the TI-Phoenix 1 is totally incompatible with later Nspire models, and as Texas Instruments has never published a CAS+ OS installation file, your calculator is now permanently bricked.

Without Texas Instruments help, we could rebuild a compatible OS installation file if we managed to dump the NAND ROM.

There were many attemps using the TI-Nspire Computer Link, and all of them failed... So if we have no further similar idea, we have to try something else.



Jimbauwens is trying the thing another way. Following the idea suggested by mikehill2003, he has just tried the 1st hard-dumping of the TI-Nspire CAS+ with OS 1.0.554 I sent him.

The idea is to connect the NAND ROM to an xD card reader, as unlike other cards, xD cards are just raw NAND ROMs without any controller or interface.



Soldering those tiny pins was very hard and he even had to use a microscope!



But unfortunately, the computer stubornly states that there is no media in the xD reader.



Please cheer him up, as we might never be so close to dumping the CAS+ again...



Bigger photo available from the TI-Planet news:
http://tiplanet.org/forum/viewtopic.php?f=43&t=9179
« Last Edit: April 28, 2012, 08:21:56 pm by critor »
Logged
TI-Planet co-admin.

Offline jwalker

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 660
  • Rating: +13/-0
  • Almost everything I have released includes a 'WZ'
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #1 on: April 28, 2012, 09:39:49 pm »
wow, very nice
also what are all of the other conectors on the board for?
Logged
<a href="http://www.nerdtests.com/ft_cg.php?im">
<img src="http://www.nerdtests.com/images/ft/cg.php?val=9612" alt="My computer geek score is greater than 41% of all people in the world! How do you compare? Click here to find out!"> </a>

Support Casio-Scene against the attacks of matt @ matpac.co.uk ! For more information: Casio-Scene shuts down & Matt actions threads

Offline TheNlightenedOne

  • LV6 Super Member (Next: 500)
  • ******
  • Posts: 427
  • Rating: +16/-1
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #2 on: April 28, 2012, 10:24:51 pm »
A microscope. Wow.  O.O
That's amazing. Good effort.
Logged
"Eris" (Ndless 3.1)
"Keto" (Ndless 3.1)
"Luna" (AMS 3.10, HW4)
"Aurora" (2.55MP)

Offline Netham45

  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2103
  • Rating: +213/-4
  • *explodes*
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #3 on: April 29, 2012, 02:17:45 am »
Try something like an Infectus (used for Xbox 360/PS3 NAND dumping)?
Logged
Omnimaga Admin

Offline Jim Bauwens

  • Lua! Nspire! Linux!
  • Editor
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1881
  • Rating: +206/-7
  • Linux!
    • View Profile
    • nothing...
Re: 1st try of hard-dumping the CAS+
« Reply #4 on: April 29, 2012, 05:44:40 am »
Netham, infectus is not much diffetent than what we are trying. In the worst case I will need to desolder the chip, but I got the tools :)

@jwalker. One comnection is for the keyboard, and the other one is basically a dock connector in a different form.
Logged

Offline critor

  • Editor
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2079
  • Rating: +439/-13
    • View Profile
    • TI-Planet
Re: 1st try of hard-dumping the CAS+
« Reply #5 on: April 29, 2012, 05:48:31 am »
Quote from: jwalker on April 28, 2012, 09:39:49 pm
wow, very nice
also what are all of the other conectors on the board for?

One of the connectors is for the keyboard.

The other one is for the TI-TestBoard.
This TestBoard includes a serial DB9 connector and is supposed to have some JTAG.

We published some photos by Adriweb on TI-Planet last summer, but were asked by TI to remove them.
some of you might have kept them somewhere.
« Last Edit: April 29, 2012, 08:46:03 am by critor »
Logged
TI-Planet co-admin.

Offline AzNg0d1030

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 522
  • Rating: +45/-4
  • Hardcore anime watcher.
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #6 on: April 29, 2012, 11:50:25 am »
Omg, I feel sorry... That's one TI Nspire CAS+ gone...
Logged
You just lost the game.


Offline Jim Bauwens

  • Lua! Nspire! Linux!
  • Editor
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1881
  • Rating: +206/-7
  • Linux!
    • View Profile
    • nothing...
Re: 1st try of hard-dumping the CAS+
« Reply #7 on: April 29, 2012, 11:55:43 am »
It still works...
Logged

Offline critor

  • Editor
  • LV11 Super Veteran (Next: 3000)
  • ***********
  • Posts: 2079
  • Rating: +439/-13
    • View Profile
    • TI-Planet
Re: 1st try of hard-dumping the CAS+
« Reply #8 on: April 29, 2012, 11:55:58 am »
What are you talking about? It's still booting...
Logged
TI-Planet co-admin.

Offline AzNg0d1030

  • LV7 Elite (Next: 700)
  • *******
  • Posts: 522
  • Rating: +45/-4
  • Hardcore anime watcher.
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #9 on: April 29, 2012, 02:17:42 pm »
Ok lol. Well, more work to do to disconnect everything :P
Logged
You just lost the game.


Offline Nick

  • LV9 Veteran (Next: 1337)
  • *********
  • Posts: 1166
  • Rating: +161/-3
  • You just got omnom'd
    • View Profile
    • Nick Steen
Re: 1st try of hard-dumping the CAS+
« Reply #10 on: April 29, 2012, 02:21:53 pm »
Quote from: AzNg0d1030 on April 29, 2012, 02:17:42 pm
Ok lol. Well, more work to do to disconnect everything :P

sometimes you have to lose something if you want to save many others :) and this is one nice example, in the worst case scenario this ones gone, but maybe the other ones could be saved...
Logged

Offline apcalc

  • The Game
  • CoT Emeritus
  • LV10 31337 u53r (Next: 2000)
  • *
  • Posts: 1393
  • Rating: +120/-2
  • VGhlIEdhbWUh (Base 64 :))
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #11 on: April 29, 2012, 07:35:40 pm »
Wow, nice pics and good luck! :D
Logged

Offline mikehill2003

  • LV5 Advanced (Next: 300)
  • *****
  • Posts: 279
  • Rating: +13/-4
    • View Profile
Re: 1st try of hard-dumping the CAS+
« Reply #12 on: April 29, 2012, 09:17:55 pm »
Awesome, I'm glad somebody finally tried it!

Jim, how did you try to read the card? What error did windows give you?
Logged

Offline Jim Bauwens

  • Lua! Nspire! Linux!
  • Editor
  • LV10 31337 u53r (Next: 2000)
  • **********
  • Posts: 1881
  • Rating: +206/-7
  • Linux!
    • View Profile
    • nothing...
Re: 1st try of hard-dumping the CAS+
« Reply #13 on: April 30, 2012, 03:13:44 am »
I tried using multiple OS's. However, I realized that the reader is broken :/
(Well, it doesn't read working xD cards either)
So now I'm going to use a smartmedia reader :)
Logged
+1/-0 karm for this message
Pages: [1]   Go Up
« previous next »