The issue with lack of source code, though, is if the Ndless developers suddenly become way too busy or lose Internet access completely, preventing them from working on it again nor giving the source code to someone else to take over, then nobody else can take over. I doubt the current team would do that, but life is unpredictable sometimes. We all saw in the past what happened to many projects (especially for the TI-83 Plus) that had no source available after the author vanished off the face of the Earth. However, I would be curious about how many connections to Ndless servers are done by TI.

As far as I know, PTT hacks are currently only available on cncalc.org for registered users with several posts (else, you can't download). And of course, only if you manage to find them in chinese...

Well, PTTcopier is still available and findable with a simple google search.

Of course we can complain. Tools which can be directly or indirectly used to attack their business model exist only because they're consistently behaving as worsening pricks against us programmers and users (all of them were released after, and presumably as a consequence of, the announced vulnerability fix in OS 3.2). TI EdTech has no business crossing our freedom to tinker.

The PTT is indeed "laughably insecure and extremely easy to beat". On the one side, TI EdTech should be ashamed, both for making ineffective so-called protections and for daring to present such ineffective crap to standardized testing regulation authorities using "hardware secure" and similar void bullshit talk. On the other side, regulators should be ashamed of their own bloody incompetence, both for making silly exams and for letting companies lie to them so blatantly...

I hope we can get someone like anonymous to f*** up TI's website. But that's not what I am commenting about.
My nspire cx cas says "P-02131" on the back. What hardware revision is that?
And didn't extended mention in one of his posts (@ ndlessly.wordpress.com) that ndless may be possible through lua?
Also, as long as an nspire has a serial port, it should be hackable right? I don't know much about nspires, but couldn't a new version of ndless be made as a modified boot2 (send to your nspire through serial port)?

I hope we can get someone like anonymous to f*** up TI's website. But that's not what I am commenting about.
My nspire cx cas says "P-02131" on the back. What hardware revision is that?

Hi.

Your datestamp is probably "P-0213I" - you've got hardware revision I, the one before the evil hardware revision J.

It would be nice to check if you can install Ndless on it

And didn't extended mention in one of his posts (@ ndlessly.wordpress.com) that ndless may be possible through lua?

Ndless can be used from Lua programs, but it has to be installed first.

Also, as long as an nspire has a serial port, it should be hackable right? I don't know much about nspires, but couldn't a new version of ndless be made as a modified boot2 (send to your nspire through serial port)?

We thought so and were wrong.
For Ndless (and Nlaunch), we need Boot2 and OS versions 3.1.
And versions 3.1 just don't run properly on hardware revision J, K and above (we don't know about hardware revision I yet).
A modified Boot2 is going to be rejected by the Boot1.

My normal nspire (grayscale) boots the TI-Nspire OS when I am using the TI-84+ keypad. I have to remove the keypad multiple times for it to boot correctly. But, I am running os 3.1 on my normal nspire. Some guy mentioned in a post that his friend's nspire cx screen would turn upside down.
EDIT:
Could an ndless 3.1 program be made to downgrade another calc through the mini usb cable?

Does OS 3.2.6 fit in the TI-Nspire CX/CX CAS memory, by the way?