July 06, 2020, 04:55:30 am

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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.

TI-83 Plus OS 1.00

Started by DJ Omnimaga, April 26, 2020, 06:12:07 pm

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DJ Omnimaga

In my TI-83 Plus manual (which I still have, despite no longer having the calculator), there is a screenshot showing TI-83 Plus OS 1.00, but the oldest OS I ever saw on a real calculator was 1.03.

I wonder if anyone ever managed to find it, if it exists at all?


https://media.discordapp.net/attachments/491856847083405345/689532598577266855/unknown.png?width=1046&height=677

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