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Apple reminds: the old mobile phone tablet needs to upgrade the system before November 3, or GPS will go wrong

via:博客园     time:2019/10/20 12:08:32     readed:271


Tencent technology news, apple this autumn launched a new version of IOS 13 operating system, so far about half of Apple's mobile phones have been upgraded to this system. According to the latest news from foreign media, a new official warning from Apple called on users of Apple's old mobile phones and tablets to take immediate action. Mainly iPhone 5 and earlier, and iPad 4 tablet and earlier. Otherwise, the device may have GPS usage problems.

According to foreign media reports, users on these devices need to enter their device settings and update the operating system software to the latest available version by November 3. For some of these devices, the latest version of the system refers to IOS 9.3.6, while for others, it refers to IOS 10.3.4, which depends on the time when the corresponding devices are launched.

Apple said any device that did not update its operating system by the November 3 deadline could run into global positioning system problems and potential problems maintaining accurate dates and times. Among them, the internal date time problem may prevent Apple's gadgets from getting further updates remotely, unable to synchronize with some Internet services, such as icloud and email server. After November 3, some of Apple's older smartphones and tablets will need to be bound and updated through iTunes to get them back on track.

Now, before you comment on some of Apple's bad software work, it's important to explain what's going on here. This problem is much larger than Apple's own product range. In fact, it may affect almost all devices supporting global positioning system. Some devices are not properly repaired or prepared at a certain point in time to deal with a millennium bug like event in the field of global positioning system.

Foreign media pointed out that compared with the previous millennium bug, this may be a terrible analogy, but it is a very accurate analogy.

In short, GPS usually uses 10 bit variables or registers to calculate weeks. Therefore, the value on the counter can only be from 0 to 1023. When a device reaches week 1024, if the relevant manufacturers do not properly program and restart the counter, it may damage the positioning function and make it unable to use the global positioning system and its accurate timing data.

Absolute precision timing is very important to the operation of GPS. Why is this happening now? The first GPS week counter was launched on January 6, 1980. Then, on August 21, 1999, the weekly counter was filled for the first time and needed to be restarted. That was the first one.

Although some time has passed since April 6, some manufacturers and software developers may have restarted their GPS weekly counters after this point in time (for example, when GPS firmware is compiled and shipped to the device).

Foreign media said apple would also address the issue with software updates, the origin of the company's announcement on november 3rd.

By the way, for anyone who doesn't use an old Apple phone or Apple tablet, it's best to check the current status of any older GPS-enabled devices you might have to see if you can do the same updates, and these GPS products also include specialized devices, such as dedicated navigation devices and on-board navigation devices. (Tencent Technology Reviser / Chengxi)

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