3Com 3C13636 manual Upgrading the extended segment of the Boot ROM program

3Com Router 3000 Ethernet Family	3. Starting and Maintaining the Router
Installation Guide

Caution:

You cannot restore the Boot ROM program on site if you fail to upgrade the entire Boot ROM program. Therefore, you must not upgrade the entire Boot ROM program unless necessary and with help of engineers.

3.2.2.3Upgrading the extended segment of the Boot ROM program

Step 1: Enter the Boot Menu, and then select <7> to enter the Boot ROM operation sub-menu.

Step 2: Select <2> in the operation sub-menu to upgrade the extended segment of the Boot ROM program using XModem. Several speed options are available for you. The subsequent steps are the same as those described in "3.2.2.1 Upgrading an application program” of this section.

Caution:

This upgrade approach is only used to upgrade a portion of the Boot ROM program, so you can make a second attempt once errors occur.

3.2.3Backing up and Restoring the Extended Segment of the Boot ROM Program

3.2.3.1Backing up the extended segment of the Boot ROM program to the Flash

Follow these steps to back up the extended segment of the Boot ROM:

Step 1: Enter the Boot menu, and then select <7> to enter the Boot ROM operation sub-menu.

Step 2: Select <4> in the sub-menu to copy the current extended segment of the Boot ROM program to the Flash.

If the backup attempt is successful, the following message appears:

Writing to FLASH.Please wait...####

Backuping Boot ROM program to FLASH successed!

Step 3: When the sub-menu appears again, select <5> to exit and reboot the router.

3.2.3.2Restoring the extended segment of the Boot ROM program from the Flash

If faults occur to the extended segment of the Boot ROM or you upgrade it mistakenly, you can restore the extended segment of the Boot ROM from the Flash to the Boot ROM by taking these steps:

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