Author Topic: Downgrade For Ti-nspire os 3.9 released  (Read 17368 times)

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Offline The_King

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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #45 on: November 13, 2014, 09:22:03 pm »
I find it funny how we keep find exploits in TIs software to allow ndless somehow :)
It's simple: TI keeps writing buggy software...

That one line just made my day XD

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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #46 on: November 19, 2014, 08:32:07 pm »
17 days later, OS 3.9.1 is discovered (and it blocks the downgrade, although it's most likely not a direct counter-measure to the downgrade utility, since it's so soon after it's release. That's unless TI devotes $1 billion worth of budget on employee payroll just to block exploits in less than hours.) http://tiplanet.org/forum/viewtopic.php?p=173079&sid=4e9969230e7d88d6d242a4f52e1e2df5#p173079
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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #47 on: November 20, 2014, 12:49:17 am »
Welp, that sucks x.x
I hope that one will be able to break soon, too ^.^



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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #48 on: November 20, 2014, 07:25:50 am »
Wow, that'd be kinda ridiculous if they knew about the downgrade tool AND had a fix for it, but they may have been working on OS security all along and just fixed some 'bugs'
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Offline JotaB

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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #49 on: January 17, 2015, 08:12:15 am »
I'm having an issue.

I used this downgrade program on my nspire cx hardware revision S. Installed OS 3.6 and runned perfectly. But when I ejected the USB from the computer it stopped working. Everytime I try to boot it starts showing a loading clock at then the calculator shuts off. All the times!
Surprisingly, the calculator works when connected to computer.
I uninstalled OS 3.6 and re installed OS 3.9 but IT KEEPS WITH THE SAME PROBLEM! The calculator only works when is USB-connect.

I searched and another user on TI-Planet with hardware revision S is with the same problem.

What should I do now?

Offline Vogtinator

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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #50 on: January 17, 2015, 08:15:24 am »
Try the maintenance menu and format everything. You can also try to play a bit with the diagnostics utility, that could give us a clue what might be causing this.
It may even work to take the battery out and wait for a few minutes and try again.

Offline JotaB

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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #51 on: January 17, 2015, 01:31:36 pm »
Ok, reinstalling OS 3.9.1 instead of OS 3.9.0 solved my problem. It's a really strange issue. I wonder what should I do to get ndless on my calculator   :/

Offline Springyboy

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Re: Downgrade For Ti-nspire os 3.9 released
« Reply #52 on: January 19, 2015, 04:47:54 am »
Ok, reinstalling OS 3.9.1 instead of OS 3.9.0 solved my problem. It's a really strange issue. I wonder what should I do to get ndless on my calculator   :/

Quote from https://tiplanet.org/forum/viewtopic.php?f=57&t=15497

If your hardware revision is 'S' or above, your calculator will not work correctly with OS <3.9.1, making the downgrade useless.

Therefore, you'll have to wait for a new version of ndless (compatible with 3.9.1) to be released before you can use it.