Cisco 2500 - upgrading IOS - checksum error

[Greenwolf]

Hi All,

I'm trying to upgrade the ios of a 2500 I just bought for my home lab. I'm getting a checksum error after he downloaded the ios from the tftp server.

Things I tried:

- check if their is something wrong with the ios on the tftp server. Checksum is fine and their is no problems loading that ios on other routers.

- replacing the main cricuit board with a spare one. I taught I maybe had a problem with the ethernet interface. And I had a spare mainboard laying around. Still didn't helped me out.

Things I wanted to try the minute i have some more spare parts:

- change the flash

Anyone have some ideas what it can be or what i can do without spending money on flash?

Thanks in advance.

Geert

[frenzeus]

Did u try upgrading your rom?

[Greenwolf]

No, i didn't upgraded my rom. But I replaced the complete mainboard with a spare one. I don't have rom chips laying around. So I can't upgrade the boot rom.

Why do you think the problem maybe lies with the ROM? Personnaly I doubt this.

But i'll put my flash ram and ram into a working 2500 and see if it has the same symptoms.

Geert

[jrkauffman]

Try formating the flash. You may have a bad bit.