1. 重起系统
2. 恢复默认设置
3. 恢复文件系统
4. 重新构建数据库
5. 恢复PS3(tm)系统
6. 系统升级

进入方法: 关机状态(红等)长按I/O直到听到三声响
It appears that firmware 2.50 also added one other feature, meant to help PS3 owners that are trying to troubleshoot their system. A recovery menu (pictured above) gives users access to a variety of restore features. It will even allow users to install a new firmware update, should anything go wrong during the installation process. To access the menu, you must hold down the power button to turn on the PS3 until you hear three beeps. Then the menu will show up.

There are a few reports of systems bricking after firmware updates, so this may be Sony's attempt at creating a fix for future problems. Hopefully, we'll never have to actually use this feature -- but if we do, it may be a quick way of avoiding a trip to the post office to send the PS3 to Sony's support center.

[Thanks, Noshino!]

谷歌翻译如下：

看来， 2.50固件还增加了一个其他功能，意在帮助PS3的业主，正在努力解决他们的系统。复苏菜单（如图以上）使用户可以得到各种恢复功能。它甚至允许用户安装新的固件更新，应该什么出差错在安装过程中。要访问的菜单，您必须按住电源按钮将在PS3上，直到你听到三个哔声。然后，菜单将会出现。

有几个报告制度bricking固件升级后，所以这可能是索尼公司的企图创造一个修正为今后的问题。我们希望，我们永远不会有真正使用这一功能-但是，如果我们这样做，它可能是一个便捷途径，避免前往邮局发送的P S3，以索尼公司的支持中心。

http://www.ps3fanboy.com/2008/10 ... dden-recovery-menu/

2.5以后，有多次推出游戏后黑屏，手柄无效，只有按电源关机。。。