Why am I not able to select previous answers with up button on TI-84?

My calculator won’t allow me to select previous answers by hitting the up button. I had a regular ti84 and it worked just fine, but this calculator won’t allow me to go up and select answers, what can I do to fix this?

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You may have an outdated Operating System (OS). If you press [2nd]>[+]>[1] what OS does your calculator say it has? I believe the latest OS is 2.55MP .

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