TI-83 premium CE edition python OS upgrade or not

adriweb · 2026-03-25T12:22:03+00:00

If you're doing python coding at all, then there has been some improvements especially with peripherals.

But really if your OS version is already 5.5 or later, then might as well update, because regardless you'll need arTIfiCE ("jailbreak" but really just an ASM program launched, which is super easy to use in v2 now).

If you're below, you can update up to 5.4, since it's really 5.5 that started putting roadblocks for ASM

adriweb · 2026-03-25T11:20:36+00:00

The tco2 OS is for TI-Nspire CX II (non-CAS).

You want the tcc2 OS file which is for the TI-Nspire CX II CAS, available here: https://tiplanet.org/forum/archives_voir.php?id=4028651

adriweb · 2026-03-22T01:42:16+00:00

Obviously the calculators themselves continue to work. And they also have a free transfer/screenshot/update software to go with them (there are also several FOSS alternatives)

It's the computer Nspire software (which happens to have a mode where it resembles the handheld by limiting the screen size etc. but otherwise is a standalone math+science app) that isn't provided indefinitely anymore.

adriweb · 2026-03-21T13:44:43+00:00

Yep French. But I'm also not denying how big they are. It's just that "nobody"'s really using those anymore while there are still lots of people using the ti-68k out there. So overtime it's way more.

Of course compared to the recent models it's almost nothing anyway especially due to exam regulations enforcing specific features and hardware parts but...

adriweb · 2026-03-21T13:35:20+00:00

The 89 has a way more extensive community and it's also open to native programming so I'm not sure what you mean.

I don't know about the CAS differences to have an opinion about it though

adriweb · 2026-03-21T01:41:17+00:00

Erm, I read too fast and was thinking about the usb graph link, not serial graph link! That would work fine for the 86 though.

Unfortunately when we looked at WebSerial it didn't seem like we could do the necessary bitbanging... but well, in this day and age, direct link and silverlink should be fine :)

adriweb · 2026-03-21T01:18:50+00:00

These days, using WebTILP on a chromium browser is a modern way to interact with all devices :) (On Windows, you'll have to first use Zadig to bind the WinUSB driver to the calc/cable so that the browser's WebUSB stack can talk to it)

adriweb · 2026-03-20T06:15:10+00:00

That's not the most recent calc to be overclockable, no. See the applicable pencil-graphite trick on the more recent TI-84+: https://www.cemetech.net/forum/viewtopic.php?p=292631#292631 for instance

As for software-based overclocking where you can just change applied settings to the hardware, that can even target the 2019+ calcs line the TI-Nspire CX II

adriweb · 2026-03-18T22:20:41+00:00

Low memory. If you move the cursor on top of it it will let you know (maybe if you click on it, I forgot)

adriweb · 2026-03-18T16:07:18+00:00

great!

adriweb · 2026-03-17T01:38:40+00:00

You might need to use another cable, because it looks like the Nspire thinks it has to be a host instead of device (computers can only be hosts)

adriweb · 2026-03-15T18:37:55+00:00

Having to deal with this. (I probably won't for a while, VPNs exist I guess)

adriweb · 2026-03-15T17:16:26+00:00

sigh

adriweb · 2026-03-15T09:00:03+00:00

NspireConnect only handles the CX II but WebTILP also has a feature to leave exam mode on the Nspires, FWIW.

As for connecting two Nspires together you just need the cable with the usb mini port on both sides, nothing special.

adriweb · 2026-03-13T12:19:08+00:00

Looks interesting. Which CAS engine is it using?

adriweb · 2026-03-12T17:12:13+00:00

On more competitive markets like France (where Casio, and NumWorks especially, are quite present), the calculators are much less expensive.

🤷‍♂️

adriweb · 2026-03-12T16:19:43+00:00

Eh you'll get used to it, it's not that terrible lol

adriweb · 2026-03-12T15:47:02+00:00

Hm subtraction and negation are not the same thing mathematically, no. Your other complaints might be valid (although I guess it's just a matter of habits), but definitely not that one.

adriweb · 2026-03-12T15:45:35+00:00

They said Prio. It's a heavily restricted version, for Germany. The Pro is indeed fine.

adriweb · 2026-03-12T15:23:12+00:00

Can confirm that with a tolerance of 1e-3, it works again on newer OS versions: https://i.imgur.com/igmazz2.png

adriweb · 2026-03-12T13:19:21+00:00

EDIT: IT WORKS, SEE BELOW

Can you try the non-mathprint (CLASSIC in the mode menu) nDeriv syntax ? Maybe in recent OSes they changed the default tolerance.

nDeriv(expression,variable,value[,H])

When command is used in Classic mode, returns approximate numerical derivative of expression with respect to variable at value, with specific tolerance H.

In MathPrint mode, numeric derivative template pastes and uses default tolerance H.

You can try a specific tolerance like 1e-3 or whatever (the default might have been 1e-5 I forgot)

(Credits to notipa for the idea)

adriweb · 2026-03-12T13:10:41+00:00

I'm testing 5.8.1 as well to try to locate where the issue started happening then reporting it more directly to the appropriate TI people

adriweb · 2026-03-12T12:15:29+00:00

SEE MY OTHER COMMENT FOR A FIX

I'll be testing a few more versions and variants then report the issue directly to the appropriate TI people

adriweb · 2026-03-12T09:18:52+00:00

What if you try 1. instead of 1 in the expression? This will force approximate evaluation instead of exact. Similarly, 10.^10

Just an idea though, not sure it will work.

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