Author Topic: Easiest way to install CAS on Ti NSpire Cx  (Read 5335 times)

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Offline 1010101

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Easiest way to install CAS on Ti NSpire Cx
« on: September 26, 2013, 01:33:59 pm »
Is the easiest method the one given in the nlaunchcx readme file?

0) backup your documents from your nspire on your computer
1) install the 3.1.0.16 boot2, usually known as "3.1".
   If you have installed OS 3.1.0.392, 3.2.0.1212, 3.2.0.1219 or 3.2.3.1233 you
   already have it. If you have installed any newer version, you probably will
   not be able to easily install the 3.1.0.16 boot2.
   Otherwise, install OS 3.1.0.392:
   CX CAS: http://ti-pla.net/a3718
   CX    : http://ti-pla.net/a3717
2) get a compatible OS. See
   http://tiplanet.org/forum/archives_list.php?id=OS+Nspire
   - NOTE: Not all TI-OSes are compatible with nLaunch.
     OSes 3.1.0.392, 3.2.0.1212, 3.2.0.1219 and 3.2.3.1233 are.
     For a full list of compatible OSes, check src/patch.c
3) use TNOC ( http://ti-pla.net/a1922 ) on the OS upgrade to remove the boot2
   (you can remove the examples too)
4) rename the TNOC'ed OS to phoenix.tns
5) transfer phoenix.tns to your calculator in the folder /nlaunch/, being at
   the root of the user-accessible part of the file-system
6) get to the CX folder
7) transfer nlaunch.tns and preloader.tns to your calculator in the folder
   /nlaunch/, being at the root of the user-accessible part of the file-system
8) if you have installed it on OS 3.1.0.392, uninstall Ndless by launching
   ndless_resources.tns
9) reboot (the reset button is the easiest way), go to the maintenance menu
   ( http://ti-pla.net/t5360 ), delete OS (option 2)
10)reboot, transfer nlaunch.tco/tcc to your calculator (an error will certainly
   be shown on the computer, check if it is ok on your calculator)
   - /!\ the initial exploit can fail. If the progress bar is stuck at 60% and
     nothing is shown (you should briefly see "YZ") at the top left of the
     screen, reset and send nlaunch.tco/tcc again.
   - /!\ getting to the OS the first time can be fairly long (max 3 min); the
     progression bar can be quite unstable. If the bar did not move at all
     during 3 minutes, consider the boot as a failure
   - NOTE: unplugging the USB cable "at the right time", i.e. after sending
     the TNO/TNC and shortly after the bar has reached 60% again, may increase
     the reliability of the installation procedure. Likewise, the second
     generation of Ndless (1.7/2.0) worked better when USB was unplugged.
11)enjoy :-)
   - /!\ when rebooting, the progress bar can sometimes be stuck a 60% with
     nothing shown at the top left of the screen. Simply press "reset" until it
     works.
   NOTE: if it is working fine and you want nLaunch to be more stealthy when
   booting, you can compile a quiet version ("DEBUG 1" in nlaunch.c).


Seems pretty complicated. I am confused on how to find a compatible OS

Offline russo

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Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #1 on: January 28, 2014, 12:53:47 pm »
I whant do this on my nspire cx, this prossec work? i have os 3.6.

Offline DJ Omnimaga

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Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #2 on: January 28, 2014, 01:03:11 pm »
Nope. There's no way to get rid of OS 3.6, unfortunately, unless your serial number (on the back of the calc) ends up with letter A to I, not J to K. Even with a calc ending with I or lower (or no letter at all), you need an USB/TTL RS232 adapter from Ebay to downgrade to 3.1.

Offline russo

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Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #3 on: January 29, 2014, 03:31:06 am »
My calculator have on a serial nr p-0611c, with a usb/ttl and os 3.1 work, and it safe to do?

Offline russo

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Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #4 on: January 30, 2014, 10:11:16 am »
I think have another way, I have software 3.0 on a CD, if I reinstall software on my computer the os on calc go downgrade? Answer me please at this question and previous, faster than you can! Thanks!

Offline DJ Omnimaga

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Re: Re: Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #5 on: January 30, 2014, 01:37:08 pm »
My calculator have on a serial nr p-0611c, with a usb/ttl and os 3.1 work, and it safe to do?
if you already have OS 3.1 installed, please do not upgrade to anything newer. OS 3.1 is needed for Ndless. But yeah if you have OS 3.6, the USB/TTL thing should work on your hardware revision.

Offline JosJuice

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Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #6 on: January 30, 2014, 02:07:54 pm »
I think have another way, I have software 3.0 on a CD, if I reinstall software on my computer the os on calc go downgrade? Answer me please at this question and previous, faster than you can! Thanks!
No. The software your computer runs doesn't affect which OSes your calc will accept.

Offline russo

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Re: Easiest way to install CAS on Ti NSpire Cx
« Reply #7 on: January 30, 2014, 03:11:05 pm »
All process is safe? And if I whant I can get cx comeback? Thank for help me!