Huawei Quidway AR 28 Series Installation Manual page 82

Quidway AR 28 Series Routers Installation Manual
3:
4:
5:
Enter your choice(1-5):
Step 2: Select <1> in Boot ROM Download Menu to download the Boot ROM image
through XMODEM. Multiple download speeds are available. The subsequent steps are
the same as those described in the item "Upgrading the application image" in this
subsection.
Caution:
You are recommended to upgrade the entire Boot ROM program only when necessary
and with the guide of technical staff, because no means is available for on-field
recovery in case of an upgrade failure.
3) Upgrading the extended segment of the Boot ROM image
Step 1: Enter Boot Menu, select <9> to enter Boot ROM Download Menu.
Step 2: Select <2> in the menu to upgrade the extended segment of the Boot ROM
image through XMODEM. Multiple speed options are available. The subsequent steps
are the same as those described in the item "Upgrading the application image" in this
subsection.
Caution:
This upgrade approach upgrades only a portion of the Boot ROM image, so you can
make a second attempt once errors occur.
III. Backing up and restoring the extended segment of the Boot ROM image
1) Back up the extended segment of the Boot ROM image to Flash memory
Step 1: Enter Boot Menu, select <9> to enter Boot ROM Download Menu.
Step 2: In Boot ROM Download Menu, select <4> to copy the current extended
segment to Flash memory.
Backup Extended Segment, are you sure?[Y/N]
Enter <Y>. For a successful backup, the console screen displays:
Writing to FLASH.Please wait...####
Restore Extended Segment of Boot ROM from FLASH
Backup Extended Segment of Boot ROM to FLASH
Exit to Main Menu
Huawei Technologies Proprietary
6-9
Chapter 6 Router Maintenance