Upgrading the Flash EPROM Memory Card 7
Replacing Boot ROMs
Figure 4
Flash EPROM Card and Connector—Side View
To reinstall the Flash EPROM card, see the section “Replacing Boot ROMs.”
Replacing Boot ROMs
If your Cisco 4000 router does not have boot ROMs more recent than Cisco Internetwork Operating
System (Cisco IOS) Release 10.2(8), you will need to upgrade them with the boot ROMs provided
with the Flash EPROM card. To upgrade the boot read-only memory (ROM) software to a new
software image, the existing boot ROMs must be replaced.
Step 1
Open the chassis and expose the boot ROMs following the procedures in the section
“Accessing the Internal Components of the Router.”
Step 2
After the boot ROMs (FW1 and FW2) on the system card are exposed (see Figure 5),
follow the procedures in this section to replace the ROMs.
Caution
The correct placement of the boot ROMs is crucial. If improperly positioned, the new
components could be damaged when the system is powered on. Read through 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
Locate the boot ROMs, FW1 and FW2. (See Figure 5.)
Figure 5
Boot ROMs Locations and Boot ROMs Capacity Jumpers
Step 4
Using an EPROM extraction tool or a small flat-blade screwdriver, gently remove the boot
ROMs and set them aside.
96-pin connector
Software update jumpers
H4466
FW1
FW2
Boot ROMs
LED
H4465
SOFTWARE UPDATE
ALLOWED
INHIBITED
W1
J5 J6
J5 J6
8 MB boot ROMs
4 MB boot ROMs
