Upgrade boot rom version 7200

How do I upgrade the boot rom version on the 7200 router?  I am running IOS Version 12.4(22)T and when I plug in the serial ds3 card in my router it keeps rebooting with a watch dog error ( see below).  Also, what version should I upgrade to?
Router#sh ver
Cisco IOS Software, 7200 Software (C7200-SPSERVICESK9-M), Version 12.4(22)T, RELEASE SOFTWARE (fc1)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Fri 10-Oct-08 10:10 by prod_rel_team
ROM: System Bootstrap, Version 12.2(4r)B, RELEASE SOFTWARE (fc1)
BOOTLDR: 7200 Software (C7200-BOOT-M), Version 12.0(13)S, EARLY DEPLOYMENT RELEASE SOFTWARE (fc1)
Router uptime is 0 minutes
System returned to ROM by power-on
System image file is "sup-slot0:/c7200-spservicesk9-mz.124-22.T.bin"
This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.
A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html
If you require further assistance please contact us by sending email to
[email protected].
Cisco 7206 (NPE400) processor (revision A) with 229376K/32768K bytes of memory.
Processor board ID 8771332
R7000 CPU at 350MHz, Implementation 39, Rev 3.3, 256KB L2 Cache
6 slot midplane, Version 1.3
Last reset from power-on
PCI bus mb0_mb1 (Slots 0, 1, 3 and 5) has a capacity of 600 bandwidth points.
Current configuration on bus mb0_mb1 has a total of 200 bandwidth points.
This configuration is within the PCI bus capacity and is supported.
PCI bus mb2 (Slots 2, 4, 6) has a capacity of 600 bandwidth points.
Current configuration on bus mb2 has a total of 0 bandwidth points
This configuration is within the PCI bus capacity and is supported.
Please refer to the following document "Cisco 7200 Series Port Adaptor
Hardware Configuration Guidelines" on Cisco.com <http://www.cisco.com>
for c7200 bandwidth points oversubscription and usage guidelines.
1 FastEthernet interface
125K bytes of NVRAM.
47040K bytes of ATA PCMCIA card at slot 0 (Sector size 512 bytes).
4096K bytes of Flash internal SIMM (Sector size 256K).
Configuration register is 0x2102
Self decompressing the image : ########################################################################################    #######################################################################################################################    ############################################################################# [OK]
System Bootstrap, Version 12.2(4r)B, RELEASE SOFTWARE (fc1)
TAC Support: http://www.cisco.com/tac
Copyright (c) 2002 by cisco Systems, Inc.
ROM: Rebooted by watchdog hard reset
C7200 platform with 262144 Kbytes of main memory

Hi,
I think you are looking for this procedure?
http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/12S28FUR.html#wp1073907
Let me know whether it does address your question.
Cheers,
Ivan.

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