是这样成功的，感谢！

格式化存储卡，把固件重新复制到卡上，启动飞机电源，还是会发出尖叫声，一直让它持续，大约五分到八分钟左右，会转为嘀--嘀嘀的声音，此时，重刷固件成功。

请分享一下解决方案

重复升级导致

翻阅了别人的帖子，已经解决了！

关机后把内存卡放到电脑上看结果，如下 Result: Success. ========== 2014.01.01 00:00:14 remo-con disconnect====== Packet: P3X_FW_V01.02.0006.bin Result: Abort. The firmware on the SD card is identical to or older than the current firmware on the aircraft. ========== 2015.06.22 08:42:31 ===================== Packet: P3X_FW_V01.02.0006.bin Result: Abort. The firmware on the SD card is identical to or older than the current firmware on the aircraft. ========== 2014.01.01 00:00:14 remo-con disconnect====== Packet: P3X_FW_V01.03.0020.bin Upgrading ... Result: Success. ========== 2015.08.06 09:56:01 ===================== Packet: P3X_FW_V01.03.0020.bin Result: Abort. The firmware on the SD card is identical to or older than the current firmware on the aircraft. ========== 2015.08.06 10:12:28 ===================== Packet: P3X_FW_V01.03.0020.bin Result: Abort. The firmware on the SD card is identical to or older than the current firmware on the aircraft. ========== 2014.01.01 00:00:12 remo-con disconnect====== Packet: P3X_FW_V01.04.0010.bin Upgrading ... ========== 2014.01.01 00:00:12 remo-con disconnect====== Packet: P3X_FW_V01.04.0010.bin Upgrading ... ========== 2014.01.01 00:00:12 remo-con disconnect====== Packet: P3X_FW_V01.04.0010.bin Upgrading ...