In log_update_config.h, support_dual_bank_update_en is 1 to use dual backup to upgrade, and 0 is to use single backup to upgrade. It is recommended to use dual backup to upgrade when there is enough Flash space (support for ear synchronization upgrade)
Jerryzhi uses sdk's own protocol for OTA upgrade [parts]
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Origin blog.csdn.net/u013820168/article/details/112857060
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