ESP32CAM烧录程序时出现的问题

Arduino:1.8.9 (Windows 10), 开发板："AI Thinker ESP32-CAM, 240MHz (WiFi/BT), QIO, 80MHz"

项目使用了 2594094 字节，占用了 (82%) 程序存储空间。最大为 3145728 字节。
全局变量使用了56272字节，(17%)的动态内存，余留271408字节局部变量。最大为327680字节。
esptool.py v3.0-dev
Serial port COM8
Connecting........__
Chip is ESP32-D0WD (revision 1)
Features: WiFi, BT, Dual Core, 240MHz, VRef calibration in efuse, Coding Scheme None
Crystal is 40MHz
MAC: 8c:ce:4e:86:b6:d4
Uploading stub...
Running stub...
Stub running...
Changing baud rate to 460800
Changed.
Configuring flash size...
Auto-detected Flash size: 4MB
Compressed 8192 bytes to 47...
Writing at 0x0000e000... (100 %)
Wrote 8192 bytes (47 compressed) at 0x0000e000 in 0.0 seconds (effective 4369.0 kbit/s)...

A fatal error occurred: Timed out waiting for packet header
A fatal error occurred: Timed out waiting for packet header

我看论坛上说connecting时要摁reset 可还是报了这个错误