topic Re: WLC Controller Upgrade Fails. in Wireless

WLC Controller Upgrade Fails.

svanhandel — Sat, 03 Jul 2021 20:21:22 GMT

I am trying (for two days now!) to upgrade a 4402 Controller. I have upgraded three others just like it to version AIR-WLC4400-K9-4-0-179-11.aes from Version: 3.2.150.6. I have tried multiple TFTP servers and each one fails with "Failure while storing in flash". Nothing I change seems to have any effect and the tftp downloads vary as to where they drop off with no consistency.

Thanks!

Re: WLC Controller Upgrade Fails.

ankbhasi — Mon, 11 Dec 2006 14:53:02 GMT

Hi Friend,

This message comes up cause of 2-3 reasons. One if you are upgrading the image on wrong platform so please check if you are loading the image 100% on 4400 series only.

Second image may also go corrupt sometimes after using it 2-3 times which should not happen but I have observed it sometimes. So download again and then try to upgrade your controller and update us with the results.

HTH

Ankur

Re: WLC Controller Upgrade Fails.

magress — Thu, 14 Dec 2006 11:38:33 GMT

Additionally, please make sure you are using the latest version of TFTP software. Some older versions have 13-16mb limitation. You can verify this with a 'debug transfer all enable'

Thanks,

Mark

Re: WLC Controller Upgrade Fails.

jeremyarcher — Tue, 11 Sep 2007 13:58:08 GMT

I'm having this issue as well on my 4402 WLC. I've tried downloading the file three times, three different TFTP servers, and get the same result.

I'm convinced these WLC have flash problems.

Re: WLC Controller Upgrade Fails.

ericgarnel — Tue, 11 Sep 2007 14:21:01 GMT

Are you performing the upgrade via the web interface or cli? also, is the tftp server located on the same subnet as the WLC?

You may be better off using the CLI

Re: WLC Controller Upgrade Fails.

Steven van Jaarsveld — Tue, 11 Sep 2007 14:24:02 GMT

Hi There

The problem does not exist with the FLASH on the WLC COntroller. The problem here is that the OS Image for the WLC is larger than 32Mb and most TFTP servers only support files of 16Mb in size and thus fail when having to write a larger file to FLASH. Download the latest version of TFTPD32 from www.download.com (it is free) and run it.

IT WILL WORK.

HTH

Regards

Steven

Re: WLC Controller Upgrade Fails.

ericgarnel — Tue, 11 Sep 2007 14:30:04 GMT

You could also use the standard tftp server that comes with most Linux distros.

Still, it would be nice if Cisco added ftp support in 4.2 for the WLCs

Re: WLC Controller Upgrade Fails.

jeremyarcher — Tue, 11 Sep 2007 15:20:28 GMT

Steven,

I have tried other TFTP servers that do not have a size limitation and encountered the same problem after the file had been completely downloaded.

I'll try the command line as well now.

Re: WLC Controller Upgrade Fails.

jeremyarcher — Tue, 11 Sep 2007 16:58:47 GMT

I've tried Tftpd32 and that failed as well.

Re: WLC Controller Upgrade Fails.

jeremyarcher — Wed, 12 Sep 2007 04:07:00 GMT

Tonight I tried two other TFTP Servers and also tried the 4.1.185 code (I had previously been using the 4.1.171 code).

Every one failed.

Argh. Any ideas would be appreciated.

Thanks,

Jeremy

Re: WLC Controller Upgrade Fails.

cchitwood1 — Fri, 21 Sep 2007 16:40:50 GMT

I've been bagging my ahead against the wall on this but here's what I've found:

Performing upgrades over a WAN connection has not had a good success rate due to the nature of TFTP. Download the files to a PC local to the controller and run a tftp server to transfer the file across the LAN to the device. This has solved my problem when dealing with upgrades of all models of WLCs.

I suggest Cisco adds FTP capabilities to the lightweight platform in the future.

Re: WLC Controller Upgrade Fails.

kschuerman — Wed, 24 Oct 2007 20:37:00 GMT

I was having the exact same problem. I was using TFTP32 on an old windows 2000 laptop on the same subnet as the WLC. I switched to my macbook running Windows XP in bootcamp and the upgrade worked fine.

Re: WLC Controller Upgrade Fails.

phillsolomon — Tue, 06 Nov 2007 00:42:56 GMT

I am really frustrated about this too - I have now tried about half a dozen clients with still no joy - next stop layer 2

Re: WLC Controller Upgrade Fails.

Steven van Jaarsveld — Tue, 06 Nov 2007 11:07:58 GMT

Hi Guys

Please take note here that TFTPD32 does work as it supports TFTP Files greater than 16Mb in size. Run the upgrade from CLI and not the HTTPS interface. Also bear in mind that it is not possible to upgrade from 4.0.x.y to 4.1.x.y directly. You first need to upgrade to 4.0.219.0 and then to 4.1.x.y. You also need to upgrade the Boot Loader as well or the WLAN Controller may not function properly after the upgrade.

HTH

Steven

Re: WLC Controller Upgrade Fails.

Marco Hornung — Fri, 07 Mar 2008 22:40:21 GMT

Anyone find a solution?

Re: WLC Controller Upgrade Fails.

travisgillund — Thu, 13 Mar 2008 21:50:27 GMT

Anyone figure out a fix for this?

Re: WLC Controller Upgrade Fails.

sabhasin — Fri, 14 Mar 2008 01:11:21 GMT

i'm surprised tftpd32 is failing (that's the issue right? sorry, the thread just got too long!)? we've use that almost everyday and there's no signs that there's something wrong. perhaps you could paste the output of 'transfer download' from the controller to see where this is all breaking?

Re: WLC Controller Upgrade Fails.

J.Lit — Mon, 25 Mar 2019 22:15:54 GMT

Old thread, but I just had the same problem with a WLC 2504 that arrived with OS v7.4... tried updating it to 8.5, error writing to Flash (0).

I forgot the bit about updating to FUS 1.9 or later before trying to go to 8.5. Got reminded when I went to re-download the 8.5 code in case it was corrupt.

Re: WLC Controller Upgrade Fails.

ToghrulMovsumlu8322 — Fri, 28 Feb 2020 07:10:26 GMT

Thanks for information.working