[johnnyNobody999]

I'm having a difficult time making this MR7500 router to work. I just got it and it flashed OK. But I'm getting snowflakes no matter what firmware I use. And I had an issue with DHCP but got that resolved. Now I can't get the 5 GHz wifi to work even though it shows the radio active with TX power on the status page but I don't see the SSID on my phone. I tried to add the MR7500 to my WDS setup as a WDS station but can't connect even though all the settings are good. The status page shows it active though - maybe this is a compatibility issue with the WDS AP? There is a difference in chipsets. I do see the 2.4 GHz AP though. Currently using firmware 59883. I just noticed that 59833 was removed from the downloads. I'll try 59887 and get back to you.

The 5 GHZ vap works but still no-go with the 5 GHz WDS Station mode. The MR7500 (WDS Station) has the QCOM 802.11ax chipset and the R9000 (WDS AP) that I'm trying to connect to has the QCA9984 802.11ac chipset. Is that a problem? Currently on the 59887 firmware.

[lexridge]

There have been some radio issues on this router and other AX routers since at least r59808 (alpha build). While this MAY be fixed in the latest release. This was mostly happening I think when using US regulatory domain, or maybe even anything other than DE. This mostly affected 6ghz but the 5ghz and 6ghz on these devices (including mx8500) are closely knitted together somehow and when one doesn't work, it seems to affect the other.

You can try issuing these commands from a command line or in the Administrator/Commands/Startup and see if that helps.

[BrainSlayer]

[BrainSlayer]

[Wasp-Ink30]

I have a MR7500-RM2 (Linksys Refurbished) router that I just flashed r59887 onto it.

This router is being used as a Gateway device, with OpenVPN server, and USB NAS for a couple of legacy devices that rely on FTP for storage. 5Ghz & 6Ghz share the same SSID. 2.4Ghz has a separate SSID. Then there is a VAP SSID that uses both 2.4Ghz & 5Ghz. I have 802.11r(FT) enabled on the 5Ghz & 2.4Ghz radios. Then there are two Linksys EA8300's in other out buildings connected via fiber optic.

All that is functioning as expected. However I unable to get the MR7500 to utilize a swap partition. The DISK INFO section on the USB tab shows that the partition is mounted as SWAP. Using the FREE command the router reports zero across all three values TOTAL, USED, & FREE.

[Wasp-Ink30]

Nevermind. Swap is not configured in the kernel.

I tried using a swap file instead of a partition and get the following error message when issuing the swapon [swap file name] command:

[BrainSlayer]

[Wasp-Ink30]

I wouldn't bother with it then. I was only wanting to run a couple entware packages on occasion for network inspection and intrusion protection. Wireshark and Suricata.

I only asked about it not gettting the swap to work because I hadn't received the error message until I tried the swapfile instead of the partition.

[johnnyNobody999]

I got an Linksys MR7500 and got it flashed to r60098 firmware. At first I didn't think it would connect to my WDS network but it does connect to the Netgear R9000 (WDS AP - 5 GHz) router. I've noticed that the stats show the MR7500<->R9000 connection speed to be 866 Mb while the R7800 (WDS STA - 5 GHz) routers (3 of them) that connect at between 1170 and 1560 Mb. All the routers are set to VHT80. I haven't found a way to get the MR7500 to match the R7800 router speeds.

Anyway, the 6 GHz feature of the MR7500 seems to work since I can see it on my Google Pixel 7 Pro and I got a good connection. UPDATE: The 6 GHz works but it's unreliable. I'm sitting here about 3 feet from the router and the 6 GHz drops in and out - this after watching it over a few hours.

[ho1Aetoo]

the MR7500 is limited to 2x2 in the 2.4GHz and 5GHz band.
the R7800 can do 4x4

https://mcsindex.com/

[johnnyNobody999]

[Wasp-Ink30]

Router/Version: Linksys MR7500-RM2 [-RM2=Linksys remanufactured/refurbished]
File: https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2025/03-11-2025-r60217/linksys-mr7500/dd-wrt-webflash.bin
Kernel: DD-WRT v3.0-r60137 std (03/08/25) Linux 6.6.81-rt29 #2829 SMP Sat Mar 8 07:04:24 +07 2025 aarch64
Previous/Reset: R60137 / Reset
Mode/Status: Gateway, OpenVPN Server, NAS, DnsCrpyt, two other A/P's behind this device.
Issues/Errors: This build took multiple attempts to flash, then zero connectivity outside.

I attached both the messages and dmesg files.

I tried to flash this build seven times before trying something different. Each time I would get a small dialog box with "upgrade: failed" then it would get stuck in boot loop until I manually forced the partition change because auto recover would not work.
So, I tried using the the factory-to-ddwrt file but I gave up after 8 tries. I would just get stuck in a boot loop until I forced a manual partition change.
So I downloaded another copy of the webflash file.(Both downloads had the same checksum.) Tried another three attempts before I got this build to boot. Once it booted there was ZERO connectivity. No LAN, No WLan, NO WAN - Nothing. Did two hard resets, then LAN & WAN connectivity came up, but there was no WLAN. Had to manually assign IP to network adapter to connect, No DHCP. Changed the username & p/w, enabled the WAN. The router acquired a public IP immediately, but could not connect to internet due to lack of DNS. I used IP address instead of URL for NTP client so the router can get current time without DNS being available.
What I soon discovered was DNS was not working. I tried disabling dnscrpyt, which redirected DNS back to the ISP & DNS resolution starter. I Restarted dnscrpyt and dns resolution stopped again.

Downloaded the attached log files. I saw the DNSCRYPTd, ECM, DNSMASQ, WLANd, PPTPd, and couple other services kept restarting repeatedly. DNSMASQ would successfully start then there would be a 'exiting on receipt of SIGTERM' message.

I gave up and went back to R60137.

Note: I would like to collect serial connection logs, but once I get the four screws from the bottom of the case I fail to see how to open the case without destroying it. So I haven't opened it. FYI - swap is functioning as expected in r60137.

[lexridge]

After reading your post I plugged my MR7500 back in and it had r60098 on it, so I preceded to upgrade to r60217. It flashed and booted right up without any issues. The only difference I can guess at is that r60217 has a bunch of new firewall options. They were not yet "fine tuned" with this release. I happen to have my firewall disabled. A serial log would be most helpful in your case, but it should be much better in the next release.

To disassemble your MR7500 router:
Required tools:
- At least 4-6 medium guitar picks or equivalent plastic cellphone repair kit items.
- #2 Philips Screw Driver

Take it apart:
- Remove all four rubber feet. It easier to use a tiny flat head screwdriver it you want to save your fingernails. You will find philips screws beneith them. Remove those screws. They are about 1.25" long.

- insert the first guitar pick at the back, top seam. There are 5 connector tab hooks, one in the center and two on each side, so don't try the middle. Move slightly left or right. Once inserted, slide the pick to the left or right, depending on which side you started from.

- Once you get the pick to either edge, leave it there and insert a new pick at the corner perpendicular to the first pick. It's tough to work around the rear antenna but can be done if done carefully. This is the one that really starts to release the inner tabs.

- Run it down the entire length of the side, you should hear the tabs disconnceting as you do. Leave the pick inserted once you get to the front of the router and push in another pick next to it, and slide again towards the back of the router. You should again hear the clips unlocking. Leave the pick in place. Do not remove it.

- Do the same for the other side. Once both sides are lifted (you will need to help with your fingers) Pull up the front of the router (it will take a bit of force). It's kinda like it's on hinges to the back of the router. Lift up the front and pull towards you to remove the top.

- At this point you are left with a plastic cage covering the motherboard. This just simply lifts striaght up to remove.

BE SURE TO MARK THE FRONT OF EACH THE TOP AND THE CAGE as they can be put back incorrectly very easily.

[BrainSlayer]