Linksys Wired Router :: BEFSR81 V3.1 Firmware Downgrade?

Feb 20, 2011

I recently updated the firmware on my BEFSR81 v3.1 but would now like to revert to the previous version.
 
Where I can find the earlier version? I've got  2.51.4, build 006 Aug 21 2009 and need the one before.
 
It's not a critical problem, but more of an annoyance. I power everything here off one big switch which goes off overnight. Before the update I'd just switch it all on in the morning and everything would, after a minute or so, work fine. Now, however, I have to power up the router a minute after the modem or it just sits there doing nothing. That's OK when I'm here, but if it's just the wife she can't reach the back to do it.

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Linksys Wired Router :: Upgrading Firmware BEFSR81 V3 On A Mac?

Mar 14, 2009

I'm trying to upgrade the firmware on my BEFSR81 v3 cable router (firmware version 2.45.xxx) on a Mac.  I accessed the interface via Safari browser, followed the instructions, got a message saying not to interrupt the process, but it never completed.  So I tried it again (downloaded another copy of the firmware update), and same thing.  No choice but to interrupt it.  My internet connection seems to be working fine, but now I can't access the router via the browser.  I don't think the firmware actually updated.
 
Should I power down the router and then reset it?

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Jan 5, 2012

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Apr 11, 2012

I have a WAP54G in my basement shop, wired to our main router upstairs, which is a Linksys BEFSR81.  I'm not sure if this is an issue with the WAP or the router.
 
I only use the laptop computer in the shop every couple of days, but I leave the laptop plugged in and on most of the time.  I used to have the power settings such that it didn't power down completely even after a long time.  With that setup, if i didn't use the computer for several days, it would find that the connection to the router had died.  The wireless link would report that it had a solid connection, but I couldn't connect to anything.  Power cycling the WAP always fixed this.
 
Recently, I decided to save some wear & tear on the laptop drive, and adjusted the power settings to go to standby after a couple of hours.   Now, it seems I can't even go one day without losing my connection.
 
I am running the latest frimware in the WAP, and the router is version 3.1.  I can't check the firmware version on the router at the moment, because the web interface is giving me a blank screen.  I know from past experience that I will have to power cycle it to get it to talk to me again. 
 
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Jun 18, 2011

My router was not functioning well so I decided it might be a good idea to reinstall the driver package via the admin upgrade page. Since then it doesn't work at all. The power light flashes constantly now.

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Sep 15, 2011

I can connect to the router and connect to the Internet by by-passing the router, but can't connect through the router.  firmware 2.51.4 is up to date, cables are all good.  I can't find any diagnostic tools in the management screens - are there?

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Linksys Wired Router :: Using BEFSR81 And Two 360 XBoxes?

Apr 8, 2012

Problem (1)I was told that having two (2) gaming systems on the BEFSR81 router will cause both xbox machines to loose connections.   My kids demonstrated this lockup with the Xbox.  I think its because the Xbox connection is seeing 1 IP address for both game machines.  Question is there a way to fix this without getting two DSL modems with two different IP addresses ?   
 
Problem (1)My router BEFSR81 locks up at least once every 3 days and then randomly also.  We reset it is by unplugging the power to the router and it reboots and returns to normal.  I also notice that the router is quite hot on the top, so I put a small quiet fan on top and the router now works longer before it locks up.  (All green lights flash together or all on solid). So I thought gaming machines might be the reason for the lockup, we disconnected the xbox(s) and the router still locks up on occasion.  I have read the other forum and found that Amazon could be a problem since I have been logging, I turned logging off but I still have the same lockup....Is my router dying a slow death...

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Dec 12, 2006

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Feb 27, 2011

I try to make changes or save changes from the web page on my BEFSR81 nothing changes and everything revert back to the original setting made a long time ago. cancel changes works fine as the page reloads, but save changes won't make it save or reload the page with saved settings. i updated java and used 3 different browser and always get that error.

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Nov 4, 2011

i successfully configured my befsr81 router hardware version 3.1 with a dyndns hostname account. how often is it supposed to update? it doesnt seem to update till i login to the router through my browser. where is successfully updates. is there a way to choose how often it updates?

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Sep 13, 2011

I currently have a LinkSys BEFSR81 connected to my cable modem as I need at least 6 wired ports for my house network.  I also have a WRT54GS that is currently unused, but I would like to add it to the network so I can have some wireless connectivity as well. 
 
Assuming that it's possible, what's the best way to combine these two units into the same network?  Can the WRT54GS simply be connected downstream from the BEFSR81 via one of the open ports?  I'm assuming that I'll have to change the IP address on the wireless unit to make it individually accessible for configuration, status checking, etc. 

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Linksys Wired Router :: Cannot Seem To Configure BEFSR81 As Standalone Switch

Nov 6, 2011

I want to use my old BEFSR81 as a switch only and for whatever reason it doesn't seem to allow me to do that.I've disabled DCHP but I don't see a way to disable the router.  Is there some trick into using this router as a switch?

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Linksys Wired Router :: BEFSR81 V3.1 Blank Admin Pages?

Jan 28, 2010

BEFSR81 v3.1 Current firmware 2.51.4 build 600 (09-4-2009)The Web Admin pages become dysfunctional after the router has been up 3-4 days displaying only a blank white page. Viewing the page source shows that the HTML is incomplete.I am not sure of the exact firmware version where this problem originates, I noticed it after flashing to 2.51.4 build 400 but cannot remember which version was running before the update. Just flashed to 2.51.4 build 600 last week hoping the new version had corrected the problem. Still broken.The router remains completely functional but the Web interface does not work correctly after 3-4 days.I have tried re-flashing the firmware and have gone as far as resetting the router both before and after the flash, even tried 30/30/30 resets but the problem with the Web interface remains.Re-booting the router every 3 days is not the best “solution” as my network is running DHCP. I would rather not fall back to older firmware as ver 2.51.4 build 400 corrected the DHCP errors on my Windows machines and decreased the initial connection time when machines boot up. I have read in this and other forums where others are having the same problem with this router/firmware but have been unable to find a working solution which leads me to believe the actual problem resides in the later firmware builds.

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Mar 7, 2011

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Jan 22, 2011

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Mar 2, 2011

My BEFSR81 router has never been a problem for over 10 years.All of a sudden I can not connect to the internet..I only use the router for connecting 2 PCs to the internet modem. I have not changed any configuration. tried my IPS COX recommendation to disconnect the power for about 1 minute then try again with no luck. CoX said they tried pinging my router but could not get a reading. While waiting for them to come up with a solution, I hooked one of my PCs directly to the modem. It worked. So I tried it with the other PC. But it didn't work right away. It kept trying to dial up for a connection. I finally got the WIZARD to get it configured correctly. I assume it must be a router problem because either one of my PCs can get an internet connection when hooked to the modem.  I did not pusue any further with COX, THEIR AUTOMATED TROUBLE SHOOTER WAS GETTING ON MY NERVES.Should I take the time to resolve the issue with the router or buy a new or refurbished router? If the task isn't too complicatged, I am willing to try and fix it.

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May 17, 2011

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I have a nest in the house and upgraded my router because nest is very picky with what routers it works with..something to do with power save mode and NAT settings Read here.well the linksys was working just fine with the nest until I upgraded the firmware to the smart wifi thing...it's a EA2700 btw.

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Jan 2, 2012

I have the BEFSR81 V2 and every day at least one of the ports become inactive and the router has to be unplugged and plugged back in to reset the ports. I was going to upgrade the firmware from version 2.44.2 to the one on the site 2.45.10 but when it is downloading I get a message at the end upgrade file pattern error. There is a problem with the router that the ports go out or will the firmware update hopefully correct that issue and how to I get the firmware to update

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Nov 30, 2011

My BEFSR81 is my primary router and has DHCP turned on.  The router's DHCP range is set to accommodate 12 devices.  I have three computers wired to it and their Host names (as specified in the set-up of each computer) show up in the router's DHCP device table.  I also have two printers (one old Brother HL5250DN laser printer and one new HP Photosmart Premier C410a inkjet printer) connected and there are blanks where the Host name should go.  I would like to be able to tell which printer is which when I am looking at the DHCP device table.  How can I get a names associated with each printer's IP address in the router's DHCP device table?  (The real problem is that the router seems to have both printers at the same IP address (192.168.1.100) and if I can get one of them to change I'd like to know which one it was!)

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Feb 22, 2011

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Mar 13, 2011

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Mar 19, 2011

BEFSX41 Firmware Version to upgrade, version 1 or 2?
 
I've been using this router since 2006, upgrading the firmware to version 1.52.15 when released in 2007. At that time I think I selected the edition 1 rather than edition 2. Basing decision on the fact that the device had no indication of which model version was correct indicated on the manufacturing labels on the bottom. So I assume edition 1.
 
Is there any way to tell which hardware release I really have? Maybe by MAC address, or Serial number?
 
Have not had any problems with the 1.52.15 firmware version, however, I have seen numerous log entries for the following:
 
2011-03-20 11:45:23 ii=MAX_HTTPSESS2011-03-20 11:45:33 ii=MAX_HTTPSESS2011-03-20 11:45:39 ii=MAX_HTTPSESS
 
and
 
2011-03-20 10:53:09 UDP from 202.103.52.147:5060 to nnn.nnn.nnn.nnn : pppp(my ip address & port) followed by 2 to 10 of the following entries:2011-03-20 11:01:33 500 _upnp_Disable
 
the sending URL indicated as a PRC (Chinese) university with negative traceroute results, nothing really alarming as nothing is getting inside the firewall. Just packets dropped from the senders IP. I am keeping track of the pattern  and activity levels.
 
Will probably just block the whole addy range at the router firewall and PC firewall. AT&T is totally ineffective in blocking this sort of back alley activity.
 
I've seen only one brief and somewhat dated reference to the "ii=MAX_HTTPSESS" entry and will tackle that issue after updating the firmware to 1.52.16, I haven't found any authenticated tech references for this. I can only make some educated guesses on tweaking HTTP settings.

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A router newbie here. Running XP Pro with Comcast Cable. Want to install a BEFSR41 V2.1 as firewall, and add a second PC later.
 
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Q. How do I install the firmware?
Q. Will I need to manually enter any Comcast information?
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