使用wch_link 烧录不成功

错误信息如下

------------ Begin flash process of "obj\CH32V307FBP6.hex" ------------
18:19:37:022 >> Current project vendor is WCH, debugger is WCH-Link

18:19:37:022 >> Attempt to open link device and upgrade firmware if necessary...
18:19:37:074 >> Link Device is CH549. Already the latest version v2.8, no need to upgrade

18:19:37:139 >> Starting to Handle Operations...
18:19:37:734 >> Program or verify failed.
Program or verify failed. Please refer to "WCH-LinkUserManual.pdf" for more help.

18:19:37:734 >> Starting to Close Link...
18:19:37:734 >> Close Link Success
---------------------------------End ----------------------------------

使用WCH-LinkUtility测试wchlink能读取到ch32V307的信息，且没加读写保护，无法写入成功。

关闭校验能写入成功但读取flash内容发现实际并未改变

情况如图，我手上仅有wch——link请问如何解决

您好，这边建议你先通过WCHISPTool工具下载一下程序测试一下能否正常下载并正常运行。若通过WCHISPTool工具能够正常下载且正常运行，建议按照下图圈出部分降低一下速度或将连接WCH-Link与测试板的接线用短的杜邦线连接测试一下能否下载成功并正常运行。后续若有问题，可通过邮箱（lzs@wch.cn）和我沟通。

问题已解决，我将MRS从1.4升级到最新版就好了