› UKTH forums › 🛜 Wireless Routers & Modems › ASUS & Wireless › Latest Beta Firmwares for DSL-AC51 to DSL-N66U incl. DSL-AC750 Latest DSL ASUSWRT firmware v9.1.2.3_502-g2bdb05b now available. (latest firmware’s are at end of threads) For following ASUS DSL Modem Routers: DSL-AC51 DSL-AC52U DSL-AC55U DSL-AC56U DSL-AC750 DSL-N10-C1 – (extended beta support...
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UK Sentinel.
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- December 9, 2020 at 1:52 pm #10287
thanks Sentinel, I am going to test with mine. (ac55u)

In a completely sane world, madness is the only freedom (J.G.Ballard).
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December 9, 2020 at 2:36 pm #10288Update link as follows: 2020_12_04_v9.1.2.3_906-g96e2b5b https://www.asuswebstorage.com/navigate/a/#/s/169819C89B2842A0A1C8397F628A2B22Y Note: I will amend above posts to reflect this new link and not all the usual models have been updated ? See attachment below for list of updated DSL (MediaTeK) units
Is this a stable version or a beta version? I don’t see it available on the website or in the router update page yet. Any changelog? Thanks!
Edit: I’ve just seen it in the first message. I read only the second one. Beta and changelog. I’ll test the lcp-echo-adaptive feature once the stable version is released.
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December 9, 2020 at 4:54 pm #10292December 22, 2020 at 11:08 am #10639I’m on official 1.1.2.3_858 after several betas. I must say that this is the most stable version so far. My AC750 had always problems since day 1.
The admin panel would stop responding less than a day after each restart, 5 Ghz wifi was generally undiscoverable. No problems after this firmware. But 5Ghz offers unstable speeds, between 40-65 Mbps after each speed test (wired speed is 80 tops).
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December 22, 2020 at 12:40 pm #10640I’m on official 1.1.2.3_858 after several betas. I must say that this is the most stable version so far. My AC750 had always problems since day 1. The admin panel would stop responding less than a day after each restart, 5 Ghz wifi was generally undiscoverable. No problems after this firmware. But 5Ghz offers unstable speeds, between 40-65 Mbps after each speed test (wired speed is 80 tops).
Good to hear, do you use any form of QoS with your AC750 ?
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December 26, 2020 at 9:08 am #10747Good to hear, do you use any form of QoS with your AC750 ?
I had been using Smart QoS of the router, and noticed that it was the reason of my capped speed and then I disabled it. My contract speed had been upgraded for free during the pandemic and I didn’t notice any speed increase for months, blaming my ISP, but it turned out that previous QoS settings had been limiting the speed. My 5 Ghz speed is a bit faster than ethernet connection.
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December 26, 2020 at 12:49 pm #10753Good to hear, do you use any form of QoS with your AC750 ?
I had been using Smart QoS of the router, and noticed that it was the reason of my capped speed and then I disabled it. My contract speed had been upgraded for free during the pandemic and I didn’t notice any speed increase for months, blaming my ISP, but it turned out that previous QoS settings had been limiting the speed. My 5 Ghz speed is a bit faster than ethernet connection.
Sounds good

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December 30, 2020 at 12:12 pm #10896This FW is bad. I can’t enter modem UI via wireless, just stays in loop. I can’t connect 5Ghz directly, i have to click “connect” at least three times, when i launch my pc.
What model is your DSL Router so I can ask ASUS if they have any reported problems with this latest firmware ?
same here I am going to revert to latest release. this fw is suck :)
@byrallier – Did you mange to send ASUS a feedback form regarding 5GHz issues, I ask as ASUS have just asked for clarity on this problem ?In a completely sane world, madness is the only freedom (J.G.Ballard).
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December 31, 2020 at 9:23 am #10903Yes, I sent a few feedback with Wi-Fi Logs in the first week when they released beta. I am not sure those are enough to handle issues but I have an internet connection issue for 1 month, the service provider is driving me too crazy. So, I couldn’t provide more diagnostic after the factory reset the modem.
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December 31, 2020 at 11:07 am #10904Yes, I sent a few feedback with Wi-Fi Logs in the first week when they released beta. I am not sure those are enough to handle issues but I have an internet connection issue for 1 month, the service provider is driving me too crazy. So, I couldn’t provide more diagnostic after the factory reset the modem.
@byrallier – Can I pass onto ASUS your email address so they can look through the mails to find your feedback , I am assuming your registered email address for this forum is the same you have used for feedbacks ?Thanks

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December 31, 2020 at 8:33 pm #10912yes you can share with them. it’s same mail and I though you are working with them at first stage when I registered to here and I have added my mail address to all feedbacks.
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December 31, 2020 at 8:49 pm #10913yes you can share with them. it’s same mail and I though you are working with them at first stage when I registered to here and I have added my mail address to all feedbacks.
I will pass on your details to ASUS, have a great New Year

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January 20, 2021 at 10:32 am #11493Latest DSL ASUSWRT Beta Firmware v9.1.2.3_925-g93a8d29 now available, release note as follows.
(Note; ASUS Beta Firmware T&C’s apply)
Changelog:
– Added ‘G.INP Stability Adjustment’ option for DSL Setting > VDSL section.
– Firmware Live Update enhancements adopted.
– Web UI related fixes.
2021_01_19_v9.1.2.3_925-g93a8d29
https://www.asuswebstorage.com/navigate/a/#/s/xxxxxxxxxxx
Edit, link disabled as users are reporting issues with Live Update Enhancements caused router to automatically upgade to last Stable firmware available via update servers
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January 20, 2021 at 10:55 am #11494Latest DSL ASUSWRT Beta Firmware v9.1.2.3_925-g93a8d29 now available, release note as follows. (Note; ASUS Beta Firmware T&C’s apply) Changelog: – Added ‘G.INP Stability Adjustment’ option for DSL Setting > VDSL section. – Firmware Live Update enhancements adopted. – Web UI related fixes. 2021_01_19_v9.1.2.3_925-g93a8d29 https://www.asuswebstorage.com/navigate/a/#/s/xxxxxxxx
Updated the latest one, but I want to understand What’s for this G.INP Stability Adjustment and What should be it’s value?
Edit, link disabled as users are reporting issues with Live Update Enhancements caused router to automatically upgade to last Stable firmware available via update servers (UK Sentinel)
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January 20, 2021 at 11:06 am #11497I will ask ASUS for clarity.
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