我购买了Luckfox-Pico-Plus，并烧录了网盘提供的Ubuntu_Luckfox_Pico_Plus_MicroSD_250313版本系统。但在尝试通过USB的静态IP地址使用SSH连接开发板时，不知道登录密码。请问如何解决？

ssh [email protected]
[email protected]'s password:
Permission denied, please try again.
[email protected]'s password:
Permission denied, please try again.
[email protected]'s ...