虽然刚开始这一进步也许意味着航空公司浪费了数以百万美元进行机上娱乐系统升级，但分析师表示，由于航空公司寻求更多的节省成本计划，他们会对此乐见其成。
Whilst at first it seems this development signals millions of dollars wasted by airlines in IFE upgrades, analysts are saying airlines will welcome it as they seek more cost cutting initiatives.
应该定期进行操作系统升级和安装补丁。
Operating-system updates and patches should be installed on a regular basis.
网络同步的时候不要进行“系统升级”，“退出”等操作。
Please don't carry out "System upgrade", "Exit" and other operations while network synchronization.
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