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Author Topic: TI-Nspire OS 3.0 Released: Nleash no longer working -  (Read 16893 times) Bookmark and Share
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apcalc
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« on: 07 April, 2011, 21:46:26 »
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As reported earlier, the new Operating System for the TI-Nspire, version 3.0.1.1753 to be exact, has been released today by Texas Instruments.

Most of the new features that come with this OS have already been discussed, as they were announced in the previously released Release Notes.  To outline again quickly, the Vernir Data Quest App has been added, both 3D graphs and Differential Equation graphs are now possible, Exact values appear in the graphs of functions, and a new Document type, *.tnsp, has been introduced to allow online publishing of TI-Nspire documents.

More interesting, however, is that TI has released different OS files for the new Nspire CX Series, with extension *.tco for the TI-Nspire CX and extension *.tcc for the TI-Nspire CX CAS.  These two file groups join the original *.tno and *.tnc for the original TI-Nspire and TI-Nspire CAS, respectively.  A quick analysis comparing the *.tno and *.tco file types yields some interesting results.  First, in order to save on size, the example *.tns documents are no longer included in the OS Upgrade for the *.tno file (although they are present in *.tnc).  Secondly,  both TI-Nspire.img and boot2.img are in fact smaller on the TI-Nspire CX OS than in the regular TI-Nspire.  Finally, although the 84 Emulator has been removed from the TI-Nspire CX, the full TI-84 Plus ROM and emulator are still present on the TI-Nspire CX.  Does this mean it will in fact be possible to use the Emulator, either through an actual TI feature or a later hack???

It should also be noted that a new boot 2 version is present in these files.  In addition, nspire_emu will not run the OS. Sad

As a closing note, it is probably best to hold off on upgrading the OS on an actual Nspire until further testing is done.  As far as is known now, this OS very well might block downgrading/Ndless/countless other things.

WARNING:  Upgrading to OS 3.0 will block your ability to downgrade to an older Operating System!  

Update:  According to tests performed by critor, removing the new boot 2 with TNOC will allow one to successfully upgrade and then downgrade back to an older Operating System!!  Be sure to remove the boot 2 before attempting to upgrade!!!

Here are links to the new OS files:

TI-Nspire
TI-Nspire CAS
TI-Nspire CX
TI-Nspire CX CAS
« Last Edit: 08 April, 2011, 02:05:03 by DJ_O » Logged

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« Reply #1 on: 07 April, 2011, 21:51:37 »
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Quote from: apcalc on 07 April, 2011, 21:46:26
It should also be noted that a new boot 2 version is present in these files.  In addition, nspire_emu will not run the OS. Sad
it doesn't run the new boot ether...

Quote from: apcalc on 07 April, 2011, 21:46:26
As a closing note, it is probably best to hold off on upgrading the OS on an actual Nspire until further testing is done.  As far as is known now, this OS very well might block downgrading/Ndless/countless other things.
It is actually clearly stated at the download page that downgrading will not be possible...
very nice from TI that now they at least give this warning.
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« Reply #2 on: 07 April, 2011, 21:53:23 »
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Maybe they didn't remove the ti 84 rom because Ti thought by themselves:
If we remove this those freaks(us) will complain again. So we leave it in so they can hack it if. they really want. Normal student(who are no freaks) won't do this so no probelm. Everyone happy.

Just an idea what TI might be thinking.
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« Reply #3 on: 07 April, 2011, 21:58:58 »
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Warning, the two first links show an explicit "Once you update your handheld to v3.0, you cannot downgrade to an earlier version." mention
(read on TI-Bank, noted by critor)
« Last Edit: 07 April, 2011, 22:00:36 by Lionel Debroux » Logged
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« Reply #4 on: 07 April, 2011, 22:09:23 »
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On TI-Bank, we have a confirmation that Levak "bricked" one of his Nspires, which now refuses Nspire OS < 3.0. Mic did, too.
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« Reply #5 on: 07 April, 2011, 22:10:45 »
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Yeah, it seems like we shouldn't install OS 3.0, NOBODY INSTALL IT.
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« Reply #6 on: 07 April, 2011, 22:22:23 »
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what does os 3.0 even offer thats majorly different? nothing really at all haha
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« Reply #7 on: 07 April, 2011, 22:23:59 »
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Anybody analysing the new downgrade protection?

It's not in the TNC/TNO header anymore...


Hard-coded in the OS?



By the way, lots of comprehensive informations and secrets here:
http://ti.bank.free.fr/index.php?mod=news&ac=commentaires&id=1036
« Last Edit: 07 April, 2011, 22:25:33 by critor » Logged
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« Reply #8 on: 07 April, 2011, 22:26:00 »
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Quote
Anybody analyzing the new downgrade protection?
Of course.

Quote
It's not in the TNC/TNO header anymore...

Hard-coded in the OS?
Not sure yet.

Did you see Lionel's latest post in the bypassing RSA thread?
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« Reply #9 on: 07 April, 2011, 22:35:46 »
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it does take up a 2 megs more which is ridiculous. but at least we can try to downgrade it
« Last Edit: 07 April, 2011, 22:36:12 by coolrudski » Logged
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« Reply #10 on: 07 April, 2011, 22:36:20 »
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We can?
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« Reply #11 on: 07 April, 2011, 22:38:39 »
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Quote from: coolrudski on 07 April, 2011, 22:35:46
it does take up a 2 megs more which is ridiculous. but at least we can try to downgrade it

The increased size is mainly because of allmost 4Mb of new useless samples on the CAS OS.
Just remove them with TNOC.
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« Reply #12 on: 07 April, 2011, 22:39:13 »
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i think we can try? well on a positive not at least on the cas touchpad it looks a lot nicer
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« Reply #13 on: 07 April, 2011, 22:39:44 »
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Incidentally, boot2 is way smaller. (as everyone already pointed out)
I wish they'd done that with the rest of the OS.
« Last Edit: 07 April, 2011, 22:40:17 by mikehill2003 » Logged
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« Reply #14 on: 07 April, 2011, 22:43:44 »
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I wonder why the OS for the CXs are out before the actual calcs.
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