Replacing Boot Roms In The Cisco 4000-M; Figure 5-13 Boot Roms Locations - Cisco EF4116 Hardware Installation And Maintenance Manual

Replacing Boot ROMs in the Cisco 4000-M

To upgrade the boot read-only memory (ROM) software to a new software image, the existing boot
ROMs must be replaced.
Step 1
Step 2
Note
Caution
components could be damaged when the system is powered on. Read all of the instructions before
proceeding. To prevent damage to the ROMs from ESD (when handling the system and its
components), follow the ESD procedures described earlier. Also, be careful not to damage or scratch
the printed circuit card under the ROMs.
Step 3
Figure 5-13
J4
J6
Step 4
Step 5
Caution
components backward will damage them.
Proceed to the next section, "Replacing Network Processor Modules."
Open the chassis and expose the boot ROMs following the procedures in the section
"Accessing the Router Internal Components" earlier in this chapter.
After the boot ROMs (FW1 and FW2) on the system card are exposed (see Figure 5-5),
follow the procedures in this section to replace the ROMs.
It is not necessary to remove the Flash EPROM card for this upgrade procedure.
The correct placement of the boot ROMs is crucial. If improperly positioned, the new
Locate the boot ROMs, FW1 and FW2, on the motherboard. (See Figure 5-13.)
Boot ROMs Locations
U114
U110
FW1
FW2
Boot ROMs
Gently extract the old ROM with an ROM extraction tool or a small flat-blade screwdriver,
and set the old boot ROM aside.
Insert the new boot ROMs in their respective sockets in the orientation shown in
Figure 5-13, being careful not to bend or crush any of the bottom pins. To straighten out a
bent pin, use needlenose pliers. Align the notch in the new ROM with the notch in the ROM
socket, ignoring the orientation of the label.
The notch on the ROM must match the notch on the socket on the card. Installing the
Memory Replacement Procedures
LED
Maintaining and Upgrading the Router 5-19