Mirror Error of Rock5C lite

[calic0]

According to the doc, i execute the following command to use the mirror of lanzhou university:
sudo sed -i “s|https://radxa-repo.github.io|https://mirrors.lzu.edu.cn/radxa-apt|g” /etc/apt/sources.list.d/radxa*.list
sudo apt-get update
However, i got some error info in apt update progress like this:

But the state of the mirror is not sync. Please help to solve the problem.

[incognito]

Just the usual board support repository problems. Soon you’ll also see an expired certificate or something like this.

[calic0]

Thanks, i will try after the stable os version had been released