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Message 1 of 7
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For Asus Router Users - Merlin or Stock FW ?

I am currently running the stock firmware on my Asus RT AX88U but have heard that the Merlin FW is a lot better in terms of stability,

Has anyone any experience of using Merlin over stock and is it a case of just flashing the router with the Merlin Firmware?

Are all settings carried over into Merlin or do you have to set everything up again ?



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Very Insightful Person
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Message 2 of 7
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Re: For Asus Router Users - Merlin or Stock FW ?

I can't answer the question directly, but why would you expect third party, unpaid software to be more stable than that installed by the makers, who actually designed the package, and have to provide warranty support and meet "fitness for purpose" laws?  Open source and third party software can be a great product (some Linux, some Lineage phone firmware, Thunderbird, Firefox etc), but if there were some easy tweak to improve router performance, don't you agree Asus would have already done it?

The main purpose of third party firmware is to make possible new configurations or capabilities that the makers have undoubtedly decided that weren't needed for their target markets, or had unintended risks or consequences.  That suits some people, and good for them, but it is a minority.  By all means go ahead, but be clear on what you're doing and why you're doing it, and make sure you can revert to the OEM firmware.  What's the worst case scenario (possibly a bricked router), and is that an acceptable risk for you?

I don't wish to be rude, but if you're asking in this forum, then perhaps Merlin isn't for you?  There is unlikely to be a large mass of customers who both have a VM connection, an Asus router, and running Merlin, and whilst I know that there are some who contribute here, you'd possibly be better off asking in dedicated Merlin forums as to a rounded view of the risks and benefits.

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Message 3 of 7
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Re: For Asus Router Users - Merlin or Stock FW ?

Merlin adds some extra features on top of the ASUS firmware, it is highly rated by ASUS users and is worth a go in my opinion.

The look and feel is exactly the same as the official firmware and you can switch between Merlin and Asus without losing settings etc (it's worth backing up your settings just in case, but I've never had any problems)

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Message 4 of 7
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Re: For Asus Router Users - Merlin or Stock FW ?

I am now using Merlin firmware on my RT-AX58U and find it stable.

I am using some add-on features like the CONMON to monitor the connection, DN-VNSTAT to see how much bandwidth I use each day.

Love it!

My Speed
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Message 5 of 7
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Re: For Asus Router Users - Merlin or Stock FW ?

Personally I’m staying with stock as I’ve had connection issues over time with both the 68u and rt-ax88u. On the plus side yes merlin has much better features compared to stock If it wasn’t for these issues I would stay with custom.

Try it out your self… 

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Message 6 of 7
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Re: For Asus Router Users - Merlin or Stock FW ?

I have been using stock for years now, not had an major issues.

Red (VM SH2 AC Beta tester)
Running on 1Gbps VM service with SH4 in Modem Mode, with a ASUS RT-AC5300 router. With this setup I get Fantastic WIRED and WIRELESS Signals in my home. I dont work for VM. But I work in IT, and I know my tech.
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Message 7 of 7
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Re: For Asus Router Users - Merlin or Stock FW ?

Been using Merlin firmware since I got my 68u,  but while it still works fine, it's  a bit long in the tooth now and doesn't  play nice with the latest release. Lack of vram probably doesn't  help. 

Will be upgrading  when it needs it and it will be another Asus with Merlin fw 😀

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