Chip version switching method, device and system
A switching device and chip technology, which is applied in the field of communication, can solve the problems of unusable chips and poor firmware upgrade resistance, and achieve the effects of strong firmware upgrade resistance and increased verification probability
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[0042] Below, in conjunction with accompanying drawing and specific embodiment, the present invention is described further:
[0043] refer to figure 1 In this implementation, a chip version switching method is provided. After the chip is connected to the imaging device and powered on, the method may include the following steps: a first judging step A01, an information replacement step A02, a mark rewriting step A03, and a second judging step A04 and mark erasing step A05; of course, other steps may also be included.
[0044] The first judging step A01: After the power is turned on, access the flag bit of the version information, and judge whether the flag bit is empty; or determine whether the flag bit exists. For example, whether the flag bit stores a flag representing version information, if yes, it is not empty, and if not, it is empty. The marking position of the chip can be accessed by the chip, and then read whether the mark in the marking position exists, if it exists...
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