readonly flash?

[Marcos.Zimmermann]

Hi,

I have some flash modules in my testlab, that are flaged read only? Is it real or can I change some bits to mark it read/write? One of these modules in combination with an other marks it as read/write as long as it runs with the other modul... I use some 2500 routers with Flash RAM's,

The Flash RAM's are Intel E28F008SA-120

Thank you.

Marcos

[n2-goes]

Hello Marcos,

With old Cisco 2500, the flash was read-only.

To upgrade IOS:

1) configure a ip default-gateway

2) save config

3) copy tftp flash etc...

4) The router check that it can reach the new IOS

5) The router will re-boot with only basic IP reachability, no routing activ

6) After the re-boot, the flash is read/write and the IOS is copied on the flash

7) After the IOS is copied, the router will reload with the new IOS.

HTH,

Nadine.

[Marcos.Zimmermann]

Hi Nadine,

thank you for your help. How can I flash the IOS via the console cable? I have some routers with only Token Ring...

Marcos

[rlarkins]

Try this:

http://www.cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a008015bfac.shtml

Start the download and go to lunch... it takes a few minutes.

-- Rich

[steve.busby]

"... it takes a few minutes." hehehe

[rlarkins]

Remember, I suggested that after you start the xmodem download, you go to lunch...

... have a few beers...

... watch a baseball game...

Come back and your router is loaded!

--R

[Marcos.Zimmermann]

Hi,

this guide dosen't work for my configuration... I use a 2500 router and ios 11.0. How can I flash the IOS via console cable...

Thank you

Marcos

[steve.busby]

Try this:

http://www.cisco.com/en/US/products/hw/routers/ps233/products_tech_note09186a008009464c.shtml

or one of these:

http://www.cisco.com/pcgi-bin/Support/browse/psp_view.pl?p=Hardware:2500&s=Software_Installation

[Marcos.Zimmermann]

Hi Steve,

thank you, this helps a lot... I copied the IOS image from one router to the other...

Marcos