README

Haccdown Usage

By haccerman

1. Use arTIfiCE.8xp to run downgrade.8xp (both provided in this repository)
   1. Send both files to your calculator with your linking program
   2. Press the prgm button and execute the A program (this is the arTIfiCE shell)
   3. Select HACCDOWN from the list using the arrow keys and press enter
2. Send whatever OS version you want to your calculator using TI-Connect CE, TILP, haccerlink, or your preferred linking program
   1. Download OS from TI-Planet or download one from the operating_systems folder in this repository (might get DMCA'd for this). - 5.4 is recommended
   2. Send to calc using preferred linking program
   3. Done!

About

This program finds field 37 (minimum os version) in the certificate, and sets the most-significant byte to 1, allowing any officially released operating system to be installed, regardless of version. When the newly-installed OS is older than your current OS, it is known as downgrading your calculator.

Why

This program does one simple thing, it gives you back control over the operating system on the calculator YOU own. It allows you to downgrade to any version you desire, bypassing the artificial limitations put in place by Texas Instruments. In no way is this an act of malice; rather a necessary act of liberation. To understand why, one must first understand the coercive ecosystem in which us enthusiasts and students are forced to operate.

For decades, this community has lived under an unwritten truce. We, the programmers, tinkerers, reverse engineers, creators, who gave these devices life beyond the classroom, were permitted to exist only in TI's margins. In exchange for the monarch's tolerance of our programs, games, and the exploration of what WE OWN, we were expected to police ourselves. This "deal" struck in 2020 was not but a pledge of fealty. We were meant to be loyal subjects, the gatekeepers of our own garden, making sure that what we made never threatened the sanctity of TI's most sacred ground, exam mode. To not be annihilated by the crown, we were to respect its authority.

This coercive arrangement cultivated self censorship. The "elders," acting with the best of intentions, became the wardens of this garden. They believed that by exhibiting obedience they could maintain their privileges. Only within the bounds of what was deemed "safe" by them was innovation encouraged. The morality of a project was judged not by its technical merit, rather by its plausible deniability. As long as a tool is not explicitly marketed for cheating, its potential could be ignored.

Unburdened by this history of appeasement and unbound by contracts, ChromaLock created TI32. The project was, by all technical measures, thoroughly unimpressive. It was innovative in one vector, and only one: honesty. It was a tool for cheating, and it made no apologies for it. This shattered the illusion of the agreement between the gatekeepers and the all mighty TI.

TI's response was as predictable as it was tyrannical. They initiated a scorched earth campaign, with each release throttling the OS, patching exploits we relied on, invalidating countless hours of labor, and slammed the door for a generation of programmers, all to solve a problem of their own making. They proved what was known all along by us, that we were NEVER partners. We were, and still are, a liability to be managed, and when inconvenient, we were to be erased.

The reaction from the gatekeepers was perhaps the most tragic. They lamented the loss of the so called "deal." They condemned the outsider for their "egocentrism" and "disrespect." Their anger was focused not on the monarch who burnt the village, but on the rebel who gave them an excuse. They utterly failed to see that the "deal" was, and is, a tool of control, and that their role was to do the monopolist's work. A system that requires you to beg for permission to run code on your OWN hardware is an occupation.

This tool is the refusal of the aforementioned occupation. YOU have the absolute right to control the hardware YOU own. When you purchase a device, you are not leasing a set of approved instructions. YOU own the silicon, the plastic, the screen, and the ASIC. YOU own the right to repair, modify, and run the software of your choice. It is a manufacturer retrospectively seizing control of your property, transforming you from an owner into a mere user, subject to their arbitrary whims.

This tool restores a capability that should have never been taken away. It asserts that the community's body of work deserves to be preserved, not wiped away at a monopolist's convenience.

To those who will inevitably claim that this tool facilitates cheating, you are missing the point. The responsibility for ensuring academic integrity falls on the academic institution, not with hardware manufacturers, nor enthusiasts. We refuse to sacrifice the right of every owner in the name of proctoring an exam, for it is a grotesque act of overreach.

We are releasing this not to enable cheating, but to enable freedom. The freedom to explore, what was taken away from you by the monopolist.