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TI Releases TI-84+ OS version 2.55MP
Posted by Duncan on 12 January 2011, 00:19 GMT

TI recently published a new version of the TI-84+ operating system, numbered 2.55MP. The previous version was 2.53MP, with version 2.54MP for the Nspire emulated TI-84+. (I haven't heard of a 2.56MP, but it will probably be included in the next Nspire update, as even-numbered minor releases 2.54MP and following are targeted at the Nspire 84+ emulator.)

According to a posting on the tinspire mailing list, the new software has improved statistics and added new options to Press-To-Test. It was reported on IRC that the new OS uses another Flash page which was unused on previous releases. This will certainly cause incompatibility problems with some older programs that expect to be able to use that page. No word yet on which programs those might be.

You can download the new software for your calculator at TI's website.

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Re: TI Releases TI-84+ OS version 2.55MP
Kevin Ouellet Account Info
(Web Page)

One program that might apparently not work anymore is TI-Boy SE. Besides that I don't know if any other program might fail. I heard the OS was also larger, but on the calc the user archive is still the same.

Reply to this comment    12 January 2011, 00:33 GMT

Re: Re: TI Releases TI-84+ OS version 2.55MP
Duncan Smith Account Info
(Web Page)

Yes, as I understand it the page was left unused by TI, presumably to accomodate exactly this sort of change.

Reply to this comment    12 January 2011, 00:34 GMT

Re: Re: TI Releases TI-84+ OS version 2.55MP
DavidG Account Info
(Web Page)

The TI Boy doesn't work anymore? That's really bad, do you guys think they did it on purpose?

Reply to this comment    12 January 2011, 17:59 GMT


Re: Re: Re: TI Releases TI-84+ OS version 2.55MP
Joey Belgier  Account Info

I don't think so. TI-Boy had always failed on newer machines because they have another chip/usage of memory (?). So maybe this new OS just doesn't cover the old way of working anymore. Just an assumption.

Reply to this comment    12 January 2011, 19:17 GMT

Re: Re: TI Releases TI-84+ OS version 2.55MP
calc84maniac  Account Info
(Web Page)

Actually, this applies only to the in-development version. No worries, I will certainly make changes accordingly.

Reply to this comment    13 January 2011, 05:49 GMT


Re: Re: TI Releases TI-84+ OS version 2.55MP
Christian Franke Account Info

Mathprint and srolling throw the Entries is super and even MirageOS runs. But it is really slower and Omnicalc's entry list causes a nice crash.

Reply to this comment    17 January 2011, 18:24 GMT

Re: TI Releases TI-84+ OS version 2.55MP
qazz42 Account Info

well, people can still use it, just downgrade

Reply to this comment    12 January 2011, 20:29 GMT

Re: TI Releases TI-84+ OS version 2.55MP
Souvik Banerjee Account Info

The StatWizards functionality could be easily duplicated on an older OS with a simple TI-Basic program, so there is really no point in updating.

Reply to this comment    12 January 2011, 22:43 GMT


Re: Re: TI Releases TI-84+ OS version 2.55MP
Matthew Santilli  Account Info

No, that flashing ░ cursor would take a bit more than a simple BASIC program to do well, so you should obviously switch to 2.55 and get rid of an entire flash page.

Reply to this comment    3 February 2011, 17:14 GMT

Re: TI Releases TI-84+ OS version 2.55MP
Kaaiman  Account Info

What about the bug in 2.53MP that BrandonW fixed? Is that bug still in 2.55MP?

And what about compatibility with TIEmu8X, Omnicalc, xLIB, CelticIII and so on?

Reply to this comment    14 January 2011, 11:30 GMT


Re: Re: TI Releases TI-84+ OS version 2.55MP
KermMartian  Account Info
(Web Page)

If you're using Doors CS, the xLib/Celtic III/Omnicalc issues are irrelevant, because Doors CS supports all of xLib and Celtic III and some of Omnicalc's libraries, and works around the specific 2.53MP bug to which you refer without an OS patch.

Reply to this comment    16 January 2011, 02:21 GMT

Re: TI Releases TI-84+ OS version 2.55MP
Brandon Wong Account Info

2.55MP has Stats Wizard, which appears in the catalogue. I don't know what it does, but I have implimented it into a program which resets my calc to the default I want, which includes keeping Stats Wizard on. If anyone could tell me what it is, please do so.

Reply to this comment    17 January 2011, 03:48 GMT


Re: Re: TI Releases TI-84+ OS version 2.55MP
chris houston  Account Info
(Web Page)

I have found that the stat wizard function is simply a "easier" way to do regression lines like "Linreg(ax+b)" specifically. It really doesn't seem to be that much of a tedious task, therefore I am unsure why Ti felt it necessary to put it in the calculator.

Reply to this comment    17 January 2011, 16:24 GMT

Re: TI Releases TI-84+ OS version 2.55MP
chris houston  Account Info
(Web Page)

Good News everyone, I went to the trusty wayback machine and found Nspire os 1.3. (1.3 being on the newest page that I could get to) as soon as they put up newer pages, we can get to newer OS'es. I got 1.3 by finding the newest page they had and then navigating to the page where you would download the os. the wayback archive actually shows you the code in the os so you need to save it as a .tno. after that, you have 1.3. I'm sure this isn't a groundbreaking event, but I found it interesting I could get 1.3 off the wayback machine. PS to get 1.3, right-click on the link above this and below my name, save target as, .tno and done.

Reply to this comment    17 January 2011, 21:41 GMT

Re: Re: TI Releases TI-84+ OS version 2.55MP
chris houston  Account Info
(Web Page)

Alrighty then... bad url. just add m to the end of the url and then go to the download page. However, I just tried to install an OS i got this way and it failed...

the link above is a direct link (shortened)
here is a link to the page you can download it from here

http://crushurls.com/tinos

Reply to this comment    17 January 2011, 23:30 GMT


Re: Re: Re: TI Releases TI-84+ OS version 2.55MP
chris houston  Account Info
(Web Page)

.. sorry... doesn't work...

Reply to this comment    17 January 2011, 23:35 GMT

Re: Re: TI Releases TI-84+ OS version 2.55MP
Kevin Ouellet Account Info
(Web Page)

Nice find. I have links to OS 1.7, 2.0.1 and 2.1 on a forum topic on my site, which are still hosted on TI server, but nothing for OS 1.1 and others. I remember many people joined to beg copies of 1.1 and we couldn't distribute them ourselves.

Reply to this comment    18 January 2011, 06:30 GMT


Ti -Nspire OS and TI Releases TI-84+ OS version 2.55MP
chris houston  Account Info
(Web Page)

I know that the website linked to this post has 1.1, and getting it actually works, but I haven't gotten anything else I have requested. It only works if it shows you the SENT page and you can click continue, If you get a blank screen, nothing was sent to your email.

Reply to this comment    18 January 2011, 11:17 GMT


Re: Ti -Nspire OS and TI Releases TI-84+ OS version 2.55MP
chris houston  Account Info
(Web Page)

While I am here, has anyone else noticed that Nover 1.1 now works for Ndless 2.0? And OS 1.1 - 2.1? Maybe my computer is messing with me but I have yet to find Ndless 2.0... Maybe I am not looking in the right places...

Reply to this comment    18 January 2011, 11:20 GMT


Re: Re: Ti -Nspire OS and TI Releases TI-84+ OS version 2.55MP
JosJuice  Account Info

Ndless 2.0 is in the beta stage right now. There is no official release yet.

Reply to this comment    23 January 2011, 09:41 GMT


Re: Re: TI Releases TI-84+ OS version 2.55MP
critor  Account Info
(Web Page)

Are you sure?

Only managed to get the 1.4 CAS OS.
And if the site is right, there are no other versions of this file for now.

Reply to this comment    20 January 2011, 21:55 GMT

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