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WARNING: DO NOT UPGRADE your TI-83 Premium CE or TI-84 Plus CE to OS 5.5.1 and higher. It removes all compatibility with most games and removes ASM/C programming! DOWNGRADING IS IMPOSSIBLE. BE WARNED! Likewise, do NOT update your TI-Nspire CX past OS 4.5.0, else using Ndless and ASM/C programs will be impossible.

Installing TI-nspire CAS OS onto a CX version

Started by hll9264, March 04, 2016, 12:54:28 am

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Hello fellow Walruses!  I'm new to this community and this is my first project!  I managed to download Ndless 3.6 onto my TI-nspire CX calculator.  Now I'm looking for help to download the CAS OS.  I noticed under Ndless apps https://ndless-apps.org/ there's a file called NCalc with the description "Native access to the CAS engine," does this mean it's a download for the CAS OS?  I also noticed it won't give me the option to download this file.  Any Walrus friends willing to help a new walrus on the block?  ;D


nCalc would just work on a (CX) CAS device, it's was a POC to show access to the math engine from C/C++. It won't give you CAS on a CX non-CAS.
Co-founder & co-administrator of TI-Planet and Inspired-Lua

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What is your hardware version, by the way? I thought that nLaunchy worked on hardware I or lower. However we wouldn't be able to help you to specifically load a CAS OS on your calculator, but there are most likely plenty of nLaunchy tutorials out there if your calculator is still supported. But if you have a newer model and nLaunchy is still not supported, then you might be out of luck, and Adriweb's solution might be your best alternative.


March 04, 2016, 08:47:04 am #3 Last Edit: March 04, 2016, 08:59:50 am by aeTIos
If you installed OS 3.6, I think you're in no luck as IIRC nlaunchy only works from older OSes. Don't new OSes have new protection in the boot2 etc? However, from what I see in the other topic your calc should be compatible with nlaunchy hardware wise as it came with os 3.0.2.
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Sorry yall I'm confused by all this terminology.  Am I not able to get the CAS on my CX?  I upgraded to 3.6 through the tutorial download files, I didn't use TI's download, so maybe that'll allow me to downgrade?  My hardware version is C. 

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