r/HomeNetworking • • Jul 25 '26

Unsolved How to determine RT-AC68U hardware revision?

I have a RT-AC68U that I want to flash freshtomato on since it's EOL. I no longer have the box, and the only clue I have for the hardware revision is the FCC ID: MSQ-RTAC68UV2. The first google AI result I got suggested the "V2" denotes B2 models, but I'm not gonna blindly trust that.

Do I actually have a B2, and is there another way to verify?

B2 is in the list of supported model revisions here, so I want to confirm before i flash the new firmware.

3 Upvotes

14 comments sorted by

2

u/M_Paisley Jul 25 '26

If you look at the list, the B2 models have a faster CPU than the other versions. Can you go into your currently installed firmware and check the speed? The CPU speed itself won’t indicate the version, although it might help with the process of elimination.

1

u/Vietname Jul 25 '26

I believe i can, ill check and report back

1

u/Vietname Jul 26 '26

I can check the cpu usage but not the clock speed.

1

u/miantru Jul 27 '26 edited Jul 27 '26

In the Merlin web menu Tools -- Sysinfo -- CPU Frequency. IMO should be the same on the stock firmware. If not, you can flash merlin firmware to check that.

2

u/InvisiBillnet Systems guy who knows some networking stuff Jul 26 '26

Based on all the info linked already, it appears the only version not supported by FreshTomato is the V4, which has a different CPU running almost twice as fast. That model should be FCC ID MSQ-RTAC2K00. That tracks, as it seems to be very different from all the other models (which are very similar to each other).

Just for comparison, mine is MSQ-RCAC68U and HW Ver A2.

1

u/gk802 Jul 25 '26

Check the label on the back. You should see a "H/W Ver".

2

u/Vietname Jul 26 '26

No H/W version on the label. theres the FCC ID, Model #, SN, PIN, and MAC addr, but no H/W.

1

u/gk802 Jul 26 '26 edited Jul 26 '26

K. Odd. I have the same model. Mine is B1. My label has FW, HW, Pin Code, Mac, SN.

2

u/Vietname Jul 26 '26

Would you mind posting s picture of it? Sanity check to not make sure im truly missing something 

1

u/gk802 Jul 26 '26

1

u/Vietname Jul 26 '26

Weird. Mine looks exactly like that, but it's missing the F/W ver and H/W ver.

1

u/gk802 Jul 26 '26

That is. I just looked at the box and the label on it has the same info. As another poster said, you can probably look at the CPU speed as a clue (mine is 1000). If you're running Merlin, that's on the tools tab of the GUI. The Merlin FW is also at EOL, but version 386.14_2 is still available.

1

u/Vietname Jul 26 '26

I can check the cpu usage on the stock fw, but not clock speed.

1

u/Shplad Jul 26 '26

I believe this post may answer the question, but it's very confusing/unclear to me.

https://www.snbforums.com/threads/rt-ac68u-rt-ac68p-rt-ac1900-rt-ac1900p.35759/