Author Topic: Nspire OS 2.0, currently incompatible with Ndless, new handhelds and link software update  (Read 36152 times)

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Offline sumarth

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Arggh! So this is TI's response to Ndless; instead of taking legal action, they just make a new Nspire.
I wonder if they will still sell the old non-touchpad Nspires.

Thats not really the way i see it. The calculator itself is exactly the same, except for colors.
And if you buy the new keypad, you can use it on old Nspires, and vice versa.
So really, i dont think it is a new Nspire, just a very slightly modified on.

What sucks is that you cannot use less than os 2.0 on the new revision, even if you use the old keypad.
And the maintenance menu thing, that seems to be a direct response to Ndless

Offline sumarth

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I would like it on at least 1.6 or 1.7. I doN,t remember how good was the one right before that, though, but 1.6 or 1.7 would sure do the job for most people, since it alerady has more functions than 1.1 and people seemed to be fine with them.

i agree. A long as basic basic programs work and i can turn the calc off and on :)

Offline calc84maniac

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This is not a response to Ndless at all. How on earth could they develop and release a new Nspire revision in a couple weeks?

The old keypad should work on the new TI-Nspire numeric version.

The boot2 version is the same, so if we can find out the layout of the keyboard matrix on the new keypad, there might be an alternative key combination that is usable to downgrade.
"Most people ask, 'What does a thing do?' Hackers ask, 'What can I make it do?'" - Pablos Holman

Offline bwang

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Has anyone tried whether the old keypad + new Nspire combination re-enables the maintenance menu?

Offline DJ Omnimaga

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I heard the boot codes are the same, but is it really true? Why wouldn't the new calcs be downgradeable if they are the same, then?

I don't think this can be a response to Ndless either, since the new calcs came out so soon after the exploit came out . That's unless someone leaked an old version of Ndless only released to devs to Texas Instruments.

Offline bwang

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Well, the thing that became Ndless existed since January, so TI has had plenty of time to prepare (after all, it was public knowledge that Ndless required certain flaws in OS 1.1 to function).

Offline DJ Omnimaga

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Not to mention that Goplat emu came out in November, meaning if TI noticed this, even though the exploit was not found yet, they might have still tried to figure out if there are any at all and fix them/prevent them from being abused since then.

Offline DJ Omnimaga

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Source: http://tibank.forumactif.com/actualites-f25/ndless-2-proof-of-concept-t5208.htm

Explanation: Proof of concept of Ndless running on OS 2.0. Yes, a proof-of-concept, but could Ndless be useable on the new OS soon? Will it work on every Nspire hardware too?

EDIT: On another note, on yAronet, to attempt a downgrade on the new CAS, until the new maintenance key combination is found, ExtendeD suggests a more brutal method, similar to 73 and 83+ calcs: Remove a battery near the end of the OS 2.0 receiving, specifically during installation of it. A corrupted install triggers the deletion of the OS on the next boot by Boot 2, then resend a new OS via USB. However, there is no indication if it will work on new.
« Last Edit: March 10, 2010, 02:24:32 am by DJ Omnimaga »

Offline mapar007

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Sweet POC! Nicely done!

Offline Silver Shadow

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I just can't wait to have Ndless on my OS 2.0! That's totally awesome!!!
And all thanks to TI making more ways of hacking the OS...
Former Coder of Tomorrow


Offline DJ Omnimaga

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True, I really also hope they won't immediately release a 2.1 afterward to block downgrading x.x, else we'll know what they're up to.

EDIT: Small update on the 2.0 OS itself:

Quoted from #omnimaga:
Quote
[15:44:34] <@SilverSha> I've tested MirageOS on 2.54MP. It still doesn't work without the patch.
[...]
[15:48:12] <@SilverSha> Wtf? Even with the patch, it still doesn't work!!!

In #ti, I reported the problem to BrandonW and he responded:

Quote
[15:52:52] <BrandonW> It's probably because the patch uses the unlock exploit that they fixed in 2.53MP.
[15:52:58] <BrandonW> It's a quick fix, I just need to get around to doing it.
[15:53:00] <BrandonW> Thanks for reminding me.
[15:53:32] <BrandonW> You might have to remind me again before the day's out.
« Last Edit: March 10, 2010, 03:55:53 pm by DJ Omnimaga »

Offline ztrumpet

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Ouch about Mirage. :(

I'm glad there are some Nspire geniuses out there.  No matter what Ti does, the Nspire will be hacked, and it will have Asm.  That's cool! ;D

Offline BrownyTCat

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Offline sumarth

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so how long do you all think it will be until Ndless for 2.0 is released?
(not pressuring, just asking)
« Last Edit: March 10, 2010, 05:47:49 pm by sumarth »

Offline BrownyTCat

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so how long do you all think it will be until Ndless for 2.0 is released?
(not pressuring, just asking)
I dunno, I just want a C/ARM compiler that's easy for nSpire!