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At the end of the system startup phase, there will be a delay of 3 seconds, then copy all files in /udisk-sda1/install/ to /mnt/nand1-1/.
If the automatic upgrade fails, there may be two reasons:
1. Before the copy, the system has not recognized the u disk (the different u disk mount time is not the same);
2. For the u disk without partition, the file system is mapped in /udisk-sda/ instead of /udisk-sda1, so it cannot be copied correctly.
If you can't upgrade with using diffrent u disks, then you connect to the serial port, baud rate 115200, ttl level, to analyze and solve the upgrade failure reason through HyperTerminal. |
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