The latest technology with encryption to appear constantly, chip burn out feet, decrypt the data leak acid may exist in the process of open wrong operation and so on, in the process of the circuit changes and these are likely to cause of failure; Also at present MCU chip unlock decryption microcomputer program is stored by the internal electronics as a medium for storage, when chip, use cycle is long, or is affected by the strong external magnetic field, such as environment, can also lead to decryption failure. If with the method of pure software decoding, and the mother of the programming software, and programming programming language has a lot to do, even there is the probability of failure.
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