Support for Linksys E2500 V4

I have the Linksys E2500... the box says E2500-4B to be precise. I am hoping that "4B" is version 4. If it is I would like to help test your version.

Note: I see I have to get access to the uart. So, I do have an arduino and I think I can figure out how to use it here. The trouble is, I can't get the lid off the thing! I've tried a couple flathead screwdrivers to (gently and carefully) pry it off, but it just keeps snapping back. I've searched for videos on how to do this for this model, but I've come up empty so far.

Sorry for late reply. There are two screws under the sticker, one on the right of reset button above wall fixation and one the bottom left corner.

It's untested, I strongly encourage you to dump flash before doing anything. A $5 ch341a eeprom programmer with clamp is doing the job.

Thanks for the tip on opening up the thing. Are you saying I need an eeprom programmer for this? I guess I could get one.

Just an fyi. Since posting here, I have accomplished getting wireless here by use of a usb wireless dongle. But, since I already said I'd test this, I will go ahead and do this anyway. If it works I could make one my 2.4 and the other my 5GHz wireless router.

EEPROM programmer is not mandatory, you can test without flashing using TFTP, but it's strongly recommended because this release is untested on 2500v4.
If anything fails, and you don't have a backup you may have a brick, lost your MAC and Calibration data.

Feel free to do as you want, as you find it fun to do.

btw, i've relased a version based on 22.03 branch with a config closer to openwrt official, with basic wpad (updating form previous mays result in unknown option in wifi configuration files)

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This is what I've got:

There is a free open source tool called (I think) eeprog, which perhaps I can use with it. No?

Link says serial port...

Hey @j-d-r ,
Thanks for your work on this! I have a couple of E2500s that I picked up on clearance. I was able to tftp the new version, but the 5GHz radio does not show up in config. I will try the older release to see if that works, but I wanted to let you know about the latest one. I'll be happy to test or build images now that you laid the groundwork.

I actually want to use my routers for 2.4GHz only, so that's not an issue for me, but it will be for average users, if they want to get the AC1200 speeds at the price of a 600 :wink:

The March 30 release does show the 5GHz radio. I will keep playing with that one for a while to report use.

Thanks again for your work! @j-d-r

I kept the March 30 release and was able configure without issues. I added a couple of luci pages, removed some packages, and added a custom ssl cert. It works great. I have had it running for a few days and it is very stable, no dropped connections, plus I am getting 150 Mbps on 2.4GHz and 867Mbps on 5GHz. That is the performance of the e5400!! I need 20MHz channels for legacy and IoT stuff on 2.4, or I could get the 300 Mbps. Still, it's awesome. Thank you!

Great to hear. It's very stable on my E5400 too.

It's strange that 22.03 does not show radio, 2500v4 and e5400 are supposed to be the same boards ( and it works on mine. Was the radio listed on wireless tab, or was it just disabled due to unsupported configuration? Installing wpad-wolfssl may solve the problem.

btw, I'm testing changes/cleanup on Device Tree and I will receive soon a E5350 (same hardware) to test. I will release soon a new test version.

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Both mega links have expired. Is it possible to re-upload the serial pinout photo and OEM flash dump?

The place to collect valuable information like serial pinout, how to open the case, current support status etc. would be the OpenWrt wiki.
Currently there is no devicepage for this device.

If someone wants to create a devicepage:

In case you do not already have an OpenWrt wiki account:
Applying for OpenWrt wiki account

Your support is appreciated! :slight_smile:

Hi @tmomas,

Thanks for the info. I went ahead and created a new device page with links to this discussion and @j-d-r's github repo. The page is here
I wasn't sure what to put under supported, so I chose Not supported, since these are experimental, externally created images.

Now, would these efforts bring the V4 closer to being supported, or are we out of luck because it uses a MediaTek CPU?

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The serial pinout is in the device page I created. You only need Gnd,Tx, and Rx.

Before I flashed one of my devices, I used OpenWRT's memory dump to get copies of all partitions. I'll see if there is a spot to upload that to the device page or the tech page.

Hi, I've published two releases for testing:

I cleaned the DT:

  • removed polling for GPIO, it works without
  • renamed led system led is written WPS
  • renamed pinctrl0/gpio/ralink,group to pinctrl0/gpio/group (previous name was ignored by kernel, and issue a warning for not found DT value)
  • use the two MAC address in flash (config+0x22 and config+0x28)
  • cleanups

I tested them with on a E5350 and a E5400, everything seems ok.

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You da man, @j-d-r !!

Thank you for your work on this. I'm really happy with how solid my e2500 is.

I have a "dev" unit I picked up for tests. I'll load the new versions this weekend and report after a few days.

As everything seems OK, I issued a PR

Hi, I'm wondering if any of the above users can comment after a period of prolonged use on whether you have encountered any issues or limitations whatsoever with these builds on an e2500v4.

Thank you!

Not sure if this is an acceptable use of this forum, but - as an end user too dumb to install - would love to see this progress & also to use this build if it can be made available for end users prior to completion of the pull request. Doesn't sound like an official release will incorporate this work anytime soon.

Request guidance for an end-user installation. (Using e2500 v4.)

PR is merged in master.

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