If you need to update the firmware, use the download site listed in Resources, or use the firmware on the IBM-supplied CD-ROM.
如果需要升级固件，那么可以通过参考资料中列出的下载站点或者IBM提供的CD - ROM上的固件来进行升级。
PXE most commonly involves booting a computer from firmware i. e., a read-only memory or programmable ROM chip rather than from magnetic media.
最常见的PXE是从固件、即只读式存储器或可编程ROM芯片，而不是从磁介质引导计算机。
Read-only memory (ROM) is by far the most common form of firmware.
只读存储器(ROM)是固件的最普遍的形式。
FIRMWARE: a program permanently recorded, e. g., in ROM.
固件：永久记录程序，例如，只读存储器。
FIRMWARE: a program permanently recorded, e. g., in ROM.
固件：永久记录程序，例如，只读存储器。
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