I know this is an older post but if you get that issue it's because you're using too small of chip to but the bios on.
In this case its because the bios by the OP is 4,097 KB ,it should be 4,096 KB ,thats what the CH341A expects. You can delete the last 4 KB from the bios with a hex editor (the last line) , or use the bios at post #16 .
Comment