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CC2530低概率出现烧录的固件全部丢失,必须重新烧录固件!急!

公司开发的产品当中有几个产品网关COO类型,在稳定运行几天后,突然没反应,拿工具读出固件,查看hex文件数据除了开头的bootloader,后面的代码全是0x00,整个片子是一个空片子的状态!!!!,COO开启了NV功能,bootloader有升级功能,如果误触发升级的,升级会擦除变成0xff,不会是0x000