Omnimaga
Calculator Community => TI Calculators => General Calculator Help => Topic started by: Michael_Lee on October 28, 2010, 01:54:37 pm
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Today, at school, I wanted to see what would happen if I tried to transfer an OS from one calculator to another, so I tried sending OS 2.53MP to my friend's calculator (he had the standard OS 2.43).
I managed to send the entire OS over, but it wouldn't validate and I ended deleting my friend's OS altogether.
I tried again two more times unsuccessfully, and resorted to sending OS 2.43 from a third person's calculator (which worked first try, and interestingly, everything in archive was intact!).
So my question is, why didn't my OS validate/work?
Is it possible that my monkeying around with Axe (especially when I make mistakes and write data to oddball places) might have somehow corrupted my OS? Or is 2.53MP just non-cooperative in general?
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(this is a complete guess -- beware)
That axe stuff probably wouldn't have affected it that much, but I've heard that 2.53 doesn't send very well between calcs and even between calc and computer. Plus, 2.43 is much better, because 2.53 is pretty buggy and doesn't let certain ASM programs run. So I would get him to send his os to yours :3 (that's my opinion)\
[/randomguessbeware]
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Those OS won't validate because something changed it. That is Ti's way of keeping their OS's legitimate.
Possible things that would have changed it:
-OS patches (well duh, but this includes any type of fix)
-zStart (Just uninstall it to fix the validation)
And while it is slightly possible that an ASM program could have changed it, accidental changes usually result in complete OS failure.
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I want to know is why you would give him MP in the first place O_O
if you are using brandon's patched one tho, that could be why
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I want to know is why you would give him MP in the first place O_O
if you are using brandon's patched one tho, that could be why
Reasons:
1) My friend doesn't know how to program, and probably will never try to learn how. He also is unfamiliar with how calculators work, so he's unlikely to download games off of the internet. Things like the pretty sigma notation, mathprint, and better log stuff would be useful for him because that's pretty much exactly what we're covering in math right now.
2) Simple curiosity. I was in chemistry, and my teacher talks extremely slowly. I was extremely bored, and didn't want to risk my calculator so I just messed with his.
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It would be interesting if you could send your os to your computer and then to me, please. Thank you.
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Yeah, if your using BrandonW's modified version, TI's little code stuff won't let you send OS? :(
silly TI...
I would just get the calcs from the grade lower than you, cause they probably have 2.53MP preinstalled. ;)
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BrandonW wrote a program that will resign the OS on-calc. It takes like 20 minutes to run, though.
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It would be interesting if you could send your os to your computer and then to me, please. Thank you.
Mkay - how do I do that? I think I can use wabbitemu to pull my ROM, but I'm not sure how I could send my OS to my computer.
btw - I'm not using BrandonW's patched OS, nor am I using anything like zStart.
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I blame TI.
:P
I think you have to use TI-Device Explorer, I'm not sure though. ???
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Strange, I have never heard about invalidated OSes before. Could it be something to do with a broken certificate?
Also, does installing an OS patch automatically invalidates the OS?
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Yes, any OS patch will invalidate the OS (well, unless you also set a new OS signature.)
Another thing to watch out for is that Brandon's unlocking method may overwrite the byte at 6AAAh on page 2.
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so maybe that's what was doing it?
nice to see you around, floppus ;)
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Ah, ok then. And what is the byte located at 6AAAh on page 2?
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This (http://ourl.ca/7365) topic could be of help.