所用uniflash版本为uniflash_6.2.0及其之前版本，所使用电脑为win7两台，win10一台
出现问题，三台电脑均出现偶尔才能烧写成功现象，感觉碰运气
均提示：
[2021/4/28 上午9:02:51] [ERROR] Cortex_R4_0: Initial response from the device was not received. Please power cycle device before re-flashing.
[2021/4/28 上午9:02:51] [ERROR] Cortex_R4_0: Not able to connect to serial port. Recheck COM port selected and/or permissions.
但电脑均串口只连了板卡。
板子拨码开关如下设置
