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New Member

ROM Error

Hi dear, i got error in my router. it show like below
System returned to ROM by bus error at PC 0x4137A1E4, address 0x2D4CD468.

anybody used to meet in this case before?? please give me the advice.

Hall of Fame Super Gold

Not enough info.     Please

Not enough info.    cheeky


Please provide the "sh version" and "dir" output.

VIP Purple

Hi, In addition to what Mr.



In addition to what Mr. Leo has asked , you can also refer to the link

Can u share the output of command show region?




New Member

Cisco IOS Software, 2800

Cisco IOS Software, 2800 Software (C2800NM-ADVSECURITYK9-M), Version 12.4(20)T1, RELEASE SOFTWARE (fc3)
Technical Support:
Copyright (c) 1986-2008 by Cisco Systems, Inc.
Compiled Wed 24-Sep-08 14:37 by prod_rel_team

ROM: System Bootstrap, Version 12.4(13r)T, RELEASE SOFTWARE (fc1)

R1-WING-CCC uptime is 3 days, 3 hours, 42 minutes
System returned to ROM by bus error at PC 0x4137A1E4, address 0x2D4CD468 at 11:06:34 ICT Fri Jun 13 2014
System restarted at 11:08:03 ICT Fri Jun 13 2014
System image file is "flash:c2800nm-advsecurityk9-mz.124-20.T1.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:

If you require further assistance please contact us by sending email to

Cisco 2851 (revision 53.51) with 241664K/20480K bytes of memory.
Processor board ID FHK1233F1XC
2 FastEthernet interfaces
2 Gigabit Ethernet interfaces
2 Serial interfaces
8 Channelized/Clear E1/PRI ports
1 Virtual Private Network (VPN) Module
DRAM configuration is 64 bits wide with parity enabled.
239K bytes of non-volatile configuration memory.
62720K bytes of ATA CompactFlash (Read/Write)

Configuration register is 0x2102

VIP Purple

Hi, This could be a IOS issue



This could be a IOS issue.Suggest upgrading the IOS to 12.4.20.T6 





New Member

Hi Aman! please checkRegion

Hi Aman! please check

Region Manager:

      Start         End     Size(b)  Class  Media  Name
 0x0EC00000  0x0FFFFFFF    20971520  Iomem  R/W    iomem:(uncached_iomem_region)
 0x3EC00000  0x3FFFFFFF    20971520  Iomem  R/W    iomem
 0x40000000  0x4EBFFFFF   247463936  Local  R/W    main
 0x4000F000  0x428DFFFF    42799104  IText  R/O    main:text
 0x428EDE10  0x445B734F    30184768  IData  R/W    main:data
 0x445B7350  0x44D9412F     8244704  IBss   R/W    main:bss
 0x44D94130  0x4EBFFFFF   166117072  Local  R/W    main:heap
 0x80000000  0x8EBFFFFF   247463936  Local  R/W    main:(main_k0)
 0xA0000000  0xAEBFFFFF   247463936  Local  R/W    main:(main_k1)

Free Region Manager:

      Start         End     Size(b)  Class  Media  Name