Wad安装出错。很有可能是SD卡格式化不正确，或损坏了。

Wad Install Error Most likely incorrect format or corrupt SD card.

youdao

IOS安装出错。很有可能是用了太旧或不正确的IOS, IOS丢失，或者你想要安装的IOS不能覆盖原先安装的版本。

IOS Installation Error Most likely using an old or incorrect IOS, missing an IOS, or the IOS you're trying to install cannot be installed on top of another.

youdao