34发布后的这几天，电脑上33版本更新源（upgrade）一直提示404，用的中科大的源，之前一直好好的。

Errors during downloading metadata for repository 'updates':
- Status code: 404 for https://mirrors.ustc.edu.cn/fedora/updates/33/Everything/x86_64/repodata/7a08cd65d6c76b69405f80588e2356ae7763874985deebbd9fc3a364d7805c8e-prestodelta.xml.zck (IP: 202.38.95.110)
- Status code: 404 for https://mirrors.ustc.edu.cn/fedora/updates/33/Everything/x86_64/repodata/c7bf48927b853d7fe30607187a4439c3fdee3c7674f74b22a372d1021a307796-updateinfo.xml.zck (IP: 202.38.95.110)
- Status code: 404 for https://mirrors.ustc.edu.cn/fedora/updates/33/Everything/x86_64/repodata/002b035b6e39be61f0d8e7c41c6f1395b1b9078805e37261bfee97a056ca7500-primary.xml.zck (IP: 202.38.95.110)
- Status code: 404 for https://mirrors.ustc.edu.cn/fedora/updates/33/Everything/x86_64/repodata/bd4def0a1a3248e911ad3b0688dec67c3fd5678583af20b183cc4ddbe10d13f9-filelists.xml.zck (IP: 202.38.95.110)
错误：Failed to download metadata for repo 'updates': Yum repo downloading error: Downloading error(s): repodata/002b035b6e39be61f0d8e7c41c6f1395b1b9078805e37261bfee97a056ca7500-primary.xml.zck - Cannot download, all mirrors were already tried without success; repodata/bd4def0a1a3248e911ad3b0688dec67c3fd5678583af20b183cc4ddbe10d13f9-filelists.xml.zck - Cannot download, all mirrors were already tried without success; repodata/7a08cd65d6c76b69405f80588e2356ae7763874985deebbd9fc3a364d7805c8e-prestodelta.xml.zck - Cannot download, all mirrors were already tried without success; repodata/c7bf48927b853d7fe30607187a4439c3fdee3c7674f74b22a372d1021a307796-updateinfo.xml.zck - Cannot download, all mirrors were already tried without success

https://mirrors.ustc.edu.cn/fedora/updates/33/Everything/x86_64/repodata/，这个目录是存在的，但是下面没有找不到那几个文件啊？

估计是应该没有同步吧， 毕竟才出来。 可以恢复到官方源更新

我用的清华源，现在也没法更新

用官方源吧，把配置文件改下，fastestmirror=true，国内源经常会出一些问题

国内源对官方的镜像不完全，经常会少文件夹，如果你那里网速尚可可以MetaLink，如果你那边网速不好建议翻一下Fedora Mirror List找镜像站。