固件类型：官方提供的固件
固件文件名称：RK3399Pro JD4 - rk3399pro_linux_release_v2.5.1_202
固件下载地址：Firefly | 让科技更简单，让生活更智能
Log日志：repo_sync_error.log
你好，我们公司预研这款核心板，通过yocto编译文件系统出现了问题，需要协助着急解决，谢谢。
1、通过百度云盘下载解压的sdk，
2、主机系统版本信息
3、yocto同步sdk代码报错，
接着见上传的日志文件：repo_sync_error.log
tchip_askquestions
更新repo重新拉取sdk解决额。
This can happen on Linux and Mac. I’ve personally experienced it on Linux (Ubuntu).
Repo is trying to automatically update itself, but it is failing when trying to verify the key because it can’t find gpg. To fix it, just install Gnu Privacy Guard (gpg) and run repo again:
Make sure you have gpg installed.
Linux sudo apt-get install gpg
Mac (easiest using Homebrew) brew install gpg
Delete ~/.repoconfig so it sets up gpg correctly: rm -rf ~/.repoconfig
Run repo sync again and watch it update itself.
Errors are gone.
