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我们在使用FR8018HA开发调试的过程中，出现了几次恢复到芯片出厂程序的情况，就是串口一直打印“freq”。目前暂不清楚是用户程序损坏了还是干脆丢失了。请问从软件的角度，是否可以做用户程序保护措施？