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Messages - critor
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1996
« on: July 18, 2010, 04:13:34 pm »
There may be another way you haven't been thinking of, using the diagnostic menu from the TI-Nspire. No, not the maintenance menu, the maintenance menu is just crap... That menu:  What if there was a true "format" in the "1.Memory" this time?  It's not easy launching it, though. Enjoy! (in french, again)http://tibank.forumactif.com/actualites-f25/une-nspire-qui-craque-t5809.htmYou may use the pictures, but please mention the source and make a link. I'm going to make a big news and mention all the details with the data I'm collecting soon.
1997
« on: July 17, 2010, 04:08:31 pm »
So Lionel, you're meaning we can't use OS 2.1 at all without installing the protection? Then, the next OS release in march with some major new features is going to be a big problem for us... If I unterstand well, the only way that could remove the protection permanently from my calculators would be: 1) use Ndless2 on OS 1.7/2.0 to remove the protection from the NAND chip 2) immediately install OS 2.0 or older ? The other way would we to start factoring the keys... and to be very very lucky... 
1998
« on: July 17, 2010, 02:11:37 pm »
Also, I hope there's a way to modify the TI-Nspire OS header to remove the downgrade protection or allowing an older OS to be installed (maybe changing the version number of an old OS?) without having to go through the whole 1024 bit key factoring process...
I've experimented yesterday and today. The TI-Nspire.img header is protected by a blowfish-encrypted copy. I've managed to modify the header and the encrypted copy in a coherent way. But the installation did fail... propably the header is protected by the RSA1024 signature too... So, double protection then... I've published my tests in french: http://tibank.forumactif.com/actualites-f25/os-21-sorti-t5803-60.htm#92803
1999
« on: July 17, 2010, 10:36:56 am »
critor, when you say "paying sdk" do you mean a sdk that can be used to develop programs (games) in ASM/C or one that can only be used to create TI-Nspire documents like on calc.
A french teacher working for TI by testing the new OSes befor they are released told me about it, but I cannot say more... He didn't tell me it would be a paying software... that's my guess. I often wish to be wrong :p
2001
« on: July 17, 2010, 05:19:15 am »
Very nice story.
You may mention something else: this is not TI's first attack against Ndless. TI-Bank used to host the 1.1 OS that was automatically downloaded by Ndless. On april the 2nd, we received a letter from TI's french lawyers, saying that the OS were copyrighted and couldn't be hosted on any website, but asking only to remove OS 1.1. This was definately the 1st attack against Ndless.
So OS 2.1 is allready the 2nd attack.
The TI-Nspire Docking Station which needs OS 2.1 will be the 3rd attack... and the next OS in march with 3D graphing and maybe a paying sdk will be the 4th and 5th attack.
We have to strike back before that...
2002
« on: July 16, 2010, 07:43:01 pm »
Will anyone slashdot this? I don't know how, but the "Submit story" button at the top right looks promising. Actually, I think Critor should do it, since he was the one who found the 'bug'.
I'm not sure I'm the right person to do it. I don't speak english natively. There is much to say, and the story has to be short too... As this is very important, someone else should do it. But you may quote me if you want, and use my picture (1st post) of course.
2003
« on: July 16, 2010, 02:38:10 pm »
I have applied for membership on that Google group. If people there are posting too many uninformed or hostile crap, then we should try gently fixing them 
I'm a member too. Essentially for staying informed of the good and bad things coming from TI.
2004
« on: July 16, 2010, 01:57:59 pm »
Some of their discussion makes me sick because they praise some of the useless features of the nspire and say bad things about ndless. I only read it to find out news about the Nspire, like this. This is also where I found out about OS 2.1.
Well, they are teachers 
Hey, I'm a teacher... :-(
2005
« on: July 15, 2010, 09:53:21 pm »
Would it be possible for TI to remove assembly support on a newer version of the TI-OS (83+/84+) or AMS (68k calcs)?
Or, rather than outright do that, they could just release a really buggy OS that messes with a lot of existing assembly programs, slows down anything dealing with the home screen, introduces compatibility problems...
You know what? They allready did it. OS 2.53MP for the TI-84+ is buggy, slows down anything dealing with the home screen, introduces compatibility problems... TI is far more evil than you can imagine, you know...
2006
« on: July 15, 2010, 09:06:38 pm »
the war has just begun.
And TI strikes again allready... The new TI-Nspire classroom accessory, the TI-Nspire Docking Station, is going to force teachers to install the 2.1 OSes on all their school and student calculators... I cannot see at all why the 2.1 OS would be required to make the Docking Station work. TI probably did this on purpose, too... For more information, just Google-translate my news in french: http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=838
2007
« on: July 15, 2010, 07:21:19 pm »
yeah.. if os 2.1 is downgradable to os 1.7 + 2.0, then whats the big deal since that's what ndless is gonna be on anyways
As far as I know, Ndless2 is not stable, neither on the 1.7 OS, nor on the 2.0 OS. It's juste worse with the 2.0 OS. Do as you wish... But if I were you, I wouldn't update. Because I can't tell if Ndless2 will be released in 2010 or 2011, or even if it WILL be released...
2008
« on: July 15, 2010, 03:32:07 pm »
Moreover, the TouchPad and 2.1 protections seems to be different.
On the TouchPads, you can't install OS 1.7 or older, and if you try, you're getting the error at the beginning of the file transfer.
On the 2.1 OS, you can't install OS 1.6 or older, and if you try, you're getting the error at the end of the file transfer.
Installing the 2.1 OS on a TouchPad will give you 2 different downgrade protections.
If one of those protections is cracked, you'll be very sad because you'll still have the other protection.
I think the TouchPad protection is hardware-based, and the 2.1 OS protection is software-based.
We should avoid using the 2.1 OSes, because all created documents will only be readable by 2.1 or higher OSes.
If we share those documents, people will be forced to upgrade in order to read them...
And that's exactly what TI wants!!!
2009
« on: July 15, 2010, 02:37:34 pm »
In fact, no 2.1 OS is working on the emulator.
You can install them, but not launch them.
With OS 2.1 CAS or non-CAS and boot2 1.4, you're getting an emulator error and entering debug mode after the "loading OS" progress bar has reached 100%.
With OS 2.1 CAS and boot2 1.1, it's the same thing.
With OS 2.1 non-CAS and boot2 1.1, there seems to be a bug, as the screen freezes when the the "loading OS" progress bar reaches 100%. No error is reported. But this problem doesn't come from the emulator: the calculator is freezing too.
Is there a way on that emulator to launch the maintenance menu ?
I couldn't find a key mapped to the Home-Key.
I'd like to install OSes 2.1 and 2.0 in 2 different flash-files, and then reformat.
That way, I would have less garbage to compare...
2010
« on: July 15, 2010, 08:21:48 am »
Uh-oh this means something far more annoying. Any new Ti-Nspires most likely will have this pre-installed... The Nspire Computer automatically asks you if you want to upgrade to 2.1 when you connect your Nspire... Unadvised users are going to click "yes", of course... May be in the future, they could even upgrade without asking for our permission. A new release of Ndless is strongly needed... Because soon, (in some months), a majority of Nspire calculators will have become unable to run Ndless any more.
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