# 执行 rpi-update 提示Make sure you have ca-certificates installed and that the time is set correctly 怎么处理？

- Link: https://www.ixiqin.com/2022/11/06/perform-the-rpi-update-tip-make-sure-you-have-the-ca-certificates-installed-and-that-the-processing-time-is-set-correctly/
- Published: 2022-11-06T06:00:00+08:00
- Author: 白宦成

我在尝试执行 `rpi-update` 给自己的树莓派做固件升级时，提示了如下报错。

    ```javascript
    Make sure you have ca-certificates installed and that the time is set correctly
    Code language: JavaScript (javascript)
    ```

经过研究，发现是因为 [rpi-update 的自更新域名被国内封禁](https://github.com/Hexxeh/rpi-update/issues/206)
了（挂载 github content 上），导致无法通过自检，只能跳过自检来更新。执行如下命令，
即可跳过自检完成更新。

    ```shcb-line-numbers
    UPDATE_SELF=0 rpi-update
    ```