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TI-Nspire Downgrade Problems
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Siphonic_Sugar:
HELP ME! I downgraded my TI-Nspire's software from 3.9.1 to 3.6. It was all working and everything. I then installed Ndless, which had a successful installation. But when I unplugged the calculator from the computer, it shut off. When ever I try to turn it back on, it resets, and when it gets to the home screen, it shuts off. I already tried to reset it and it did not help.  I used the downgrade fix 391, instead of the downgrade fix 390.  What should I do to fix it?  The calculator works perfectly fine when plugged into the computer, but when I unplug it, the device turns off.
WHAT SHOULD I DO?!?
pimathbrainiac:
You should either change the batteries or charge it (depending on the model). Sounds like a power problem more than anything.
Siphonic_Sugar:
Okay, I'll try that, but what if that doesn't work? Oh, I forgot to mention, it is a TI-Nspire CX.
Adriweb:
There's no problem with the battery itself.
It's a known fact that if your calculator was shipped with 3.9.1, you can't go back to previous versions, because the hardware is sufficiently different enough not to be supported by previous OSes related to battery etc.
Your only choice is to go back to 3.9.1 and install ndless 3.9 if you need it.
Siphonic_Sugar:
The only way I could fix it was upgrading to 4.0... So now I have to wait for Ndless to be released for that version, or what?
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