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TI has released Nspire OS version 2.1. Although the release notes page lists only a couple of minor changes, there is one big surprise lurking that isn't listed. According to ‘critor’ on , this update appears to activate some sort of mechanism that prevents reinstalling any version of the OS below 1.7—which, at the present, means that once the upgrade is performed, there is no way to ever use Ndless, which requires OS version 1.1. It also appears that once activated, this downgrade protection is permanent; simply reinstalling OS 1.7 or OS 2.0 will not eliminate the protection, nor will any of the options in the maintenance menu.
Users may want to hold off on this update if there is any chance that returning to an older OS will be desired.
不过急救模式还可以进入……不知道有没有用…… |
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