参考网站:
https://forum.xda-developers.com/zuk-z2-pro/how-to/howto-flash-stock-rom-t3435109
http://ask.lenovomobile.com/?q-619599.html
出现download fail:SaHara fail....
解决方案:https://zukfans.eu/community/threads/solved-tried-flashing-stock-zui-rom-sahara-error.536/
是因为超时,迅速打开context.xml后立刻download content