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Community Member

Upgrading flash

I am trying to upgrade the flash to ver. 12 (file name: c2500-8-l.120-5.T2.bin) on Cisco 2501. After typing "config-reg 0x2101" and "reload", the router came back with the prompt as


Then, after typing "copy tftp flash", I got the following screen:

hostname(boot)#copy tftp flash

Flash: invalid chip id 0x9105

unable to configure flash for erase or write.

Flash chips recognized by system :

Code Chip-Sz Cmd-grp Chip-name

89B4 0x20000 1 INTEL 28F010

89BD 0x40000 1 INTEL 28F020

01A7 0x20000 1 AMD 28F010

012A 0x40000 1 AMD 28F020

012A 0x40000 1 AMD 28F020

1CD0 0x40000 1 M5M 28F101P

89A2 0x100000 2 INTEL 28F008SA

Flash address space cannot be written to.

Memory type is Flash. Chips are not identifiable.

Here is the screen for show ver:

hostname(boot)>show ver

3000 Software (IGS-RXBOOT Bootstrap), Version 9.14(6)[fc2], RELEASE SOFTWARE

Patchlevel = 9.1(10)

Copyright (c) 1986-1994 by cisco Systems, Inc.

Compiled Thu 07-Apr-94 13:58 by chansen

System Bootstrap, Version 4.14(6)[fc3], SOFTWARE

Hostname uptime is 1 minute

System restarted by power-on

Running default software

cisco 2500 (68030) processor (revision A) with 4096K/2048K bytes of memory.

Processor board serial number 01201364

DDN X.25 software, Version 2.0, NET2 and BFE compliant.

Enterprise software set supported. (0x0)

1 Ethernet/IEEE 802.3 interface.

2 Serial network interfaces.

32K bytes of non-volatile configuration memory.

8192K bytes of Flash address space sized on CPU board.

Configuration register is 0x2101

Is there a way to correct this problem? Thanks.

Community Member

Re: Upgrading flash

Why don't you try upgrading the flash without changing the config reg.

Just boot the router normally, make sure you have a path to the TFTP server, and then type copy tftp flash. The router will then take you into the flah loader routine, and the router will do the rest if you enter the proper ip address of the tftp server, and the path and filename. The router will the reboot, erase the flash, and load the new IOS.

Not sure what the errors you are getting mean. I've seen post about problems with AMD flash used wiht older boot roms, which appears to be what you are having. Did you recently add a flash card?

Good luck,


Community Member

Re: Upgrading flash

I still got the same error message as above after typing "copy tftp flash".

I did not add a flash card. I just want to upgrade the IOS to ver. 12.

Do you have any other suggestions?


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