Question about Linksys EtherFast Cable/DSL Router

1 Answer

Linksys BEFSR81 router wont update formware

I'm going to throw this question out to other Fixya people, and maybe someone else has run into this issue.

I picked up a Linksys BEFSR81 8 port router at a yard sale for $1, and figured I would tinker with it.

I tried updating the firmware to the latest (I am assuming I have a version 1, as no version number is even on the label, which usually means the first release).

When I try, I get a "Failed to update the flash data into ROM" when using IE, and different error when using Firefox (i don't recall the exact error, but it was something to do with the flash path). I even tried to use their flash installer, and even different versions, with the same negative results.

There are a few hits about this problem on the Linksys support site, and they say to use IE, and a few other generic stupid things to try (resetting, etc).

It's not a huge deal, as it still works the way it is, and after all, i DID only pay $1 for it.

Just wondering if anyone has ever seen this.

Posted by on

1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert that hasĀ over 10 points.

    Problem Solver:

    An expert who has answered 5 questions.

  • Contributor
  • 8 Answers
Re: Linksys BEFSR81 router wont update formware

I assume you have the oldest version of the linksys router. i suggest you buy the new router of linksys sir because that router is obsolete. try the wrt54gs router its fast and affordable

Posted on Jan 21, 2008

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

How can I be sure my linksys security is up to date without the original disc that came with the router? I am trying to be sure that my linksys is not an open gateway for neighbors to steal access from...

If you want to make sure that the signal from your router is secured, the only way you need to do about that is to put in a password or passphrase before connecting to the wireless connection. that is the security the router can give you. unless they know the code. they wont be able to connect to your router freely. and about the updates on the linksys, it is ok not to update at this point. and even if you dont have your disc. the router will still work. the disc only give you a software for the router to connect automatically. while windows can already give you that option.

Hope this helps. thank you for using Fixya,

Jun 11, 2011 | Linksys Wireless-G WRT54G Router

1 Answer

I moved from the WRT300N to the WRT160N...... wirleless is weaker and I can't hook up wireless. Similar to James_a88.....Ipod finds the network and states. "unable to join the network "XXXXXHOME" Very...

nothing like that ,,, maue sure the router is properly configured and is running the latest formware version... also remove all existing settings from ur ipod and the re connect the same

Jan 06, 2010 | Linksys WRT160N Wireless Router

1 Answer

Missing The Power Adaptor for the Mod. BEFSR81B

HI Salvador, the specs for the power supply of the BEFSR81 are:

Voltage: 5V DC
Ampere: 3A

If you have any more questions, just come back here and leave a comment - I'm happy to help.

Jul 16, 2009 | Linksys EtherFast Cable/DSL Router

1 Answer

Linksys WRT300N nor connect to microsoft servers

Maybe you have firewall that is blocking your connection to microsoft update. Try to disable it.

Jun 13, 2009 | Linksys WRT300N Wireless Router

1 Answer

How to get wi fi at home for itouch?

Your better bet is a wireless access point. It plugs into your router and can be configured to be transparent to the network so that any IP address you get for your wireless device comes from the original router (better for networking).

At the blinkingly fast speeds of your Wireless internet, "N" is a waste. Get the "G". Here's a link to the product I would runs about $50.


Feb 27, 2009 | Encore 802.11G WIRELESS LAN ROUTER...

2 Answers

Internet connection

1st check your cable with the tester 2nd configure your router then the last configure your connection go to control panel then network connection then right click local area connectn then properties one click internet protocol tcp/ip then properties check obtain IP add automatically then obtain DNS then start to connect again

Mar 27, 2008 | Linksys BEFSR81 Broadband Router with 8...

1 Answer

Cisco & Lynksys befsr81 linksys router

Connect a pc to port 2 on the befsr41. Push the reset button for 30 seconds, unplug the power for 10 seconds. Check pc ip address, it should be 192.168.1.xx. If that is the ip address, the router is working.

Mar 11, 2008 | Routers

2 Answers

BEFSR81 admin problem when enabled uPNP

I actually FOUND the solution at the linksys community forum site. It's weird, and I quote [kiefmoon], "I beat my head against this issue for the past few months, for the same reason as you: I'd built out a Windows Home Server, which can configure a home router automatically via UPnP, so I happily enabled it on the router, only to be locked out of the web-based configuration page.

Good news though! I just figured out the cause of the issue -- and it's really dumb:
You turn on UPnP on the Passwords tab, right? Well, if you look around on that page, you'll notice that, along with the option to enable UPnP, there are two password fields filled with asterisks. I think most people would assume that if they don't change anything in those fields, then click Apply, that the password has not been changed. And they'd be wrong. I don't know what the password gets changed to at that point, but it's not "admin".

...So the fix is: when you enable UPnP, do yourself a favor and enter a password in those fields (ideally something sronger than "admin" ). That way, you'll actually know what the password is when you get prompted for it."

Feb 26, 2008 | Linksys EtherFast Cable/DSL Router

1 Answer

BEFSR81 Server and BOOTP Packet Vulnerability

A flaw in the built-in DHCP server causes the routers to send BOOTP reply packets that contain sensitive information about traffic running through the devices as well as other random information about the router's configuration. New firmware to fix this issue is now available! See information on the Linksys site for upgrading to the new firmware.

Feb 16, 2006 | Linksys EtherFast Cable/DSL Router

1 Answer

AOL Broadband Cable

The following routers are the only models that support the AOL Broadband Cable service. Note: All Linksys routers support AOL DSL connections due to the standard PPPoE login and authentication connection type used with that service. Please be sure to check the version number of your router (which can be found on the underside label). Only the specific models and versions listed here are supported by AOL Cable: * BEFW11S4 * BEFW11S4 v2, v3, and v3.2 * BEFSR41 * BEFSR41 v2 * BEFSR11 * BEFSRU31 * BEFSR81 * BEFSR81 v2 * HPRO200 (Available from AOL only at this time) You must Enable the "AOL Parental Controls" option located in the Security tab of the web-based Setup utility pages of these routers in order to get a connection using AOL Cable. You may access the utility by visiting in a web browser and by logging in using the router's password (by default, the password is admin).

Feb 16, 2006 | Linksys HomeLink Phoneline (HPRO200)...

Not finding what you are looking for?
Linksys EtherFast Cable/DSL Router Logo

Related Topics:

418 people viewed this question

Ask a Question

Usually answered in minutes!

Top Linksys Routers Experts


Level 3 Expert

18258 Answers

 C. Dante
C. Dante

Level 3 Expert

623 Answers


Level 3 Expert

4327 Answers

Are you a Linksys Router Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides