Support for Asus RT-AX1800HP V2/RT-AX57

For Developers
1

i followed the instructions like how to install mtd-write. But there is no Kernel partition, so i installed to linux partition, but after reboot only power light blinks and nothing else,
Below is the list of partitions of the device.
mtd0: 00400000 00020000 "Bootloader"
mtd1: 07c00000 00020000 "UBI_DEV"
mtd2: 0001f000 0001f000 "nvram"
mtd3: 000f8000 0001f000 "Factory"
mtd4: 000f8000 0001f000 "Factory2"
mtd5: 045fe000 0001f000 "linux"
mtd6: 042e3724 0001f000 "rootfs"

Can anyone help me? I spent a lot of time on it thanks for the help

2

What image did you use? And what instructions?

I don't see any evidence that the specific device you're using is supported by OpenWrt (the RT-AX1800U is supported, but I'm not seeing anything about the PHv2). Did you find documentation that shows that these two versions use identical hardware?

3

i didn't notice it had v2 when i bought it, and i thought its hardware would be the same how to check its hardware i downloaded the firmware here https://firmware-selector.openwrt.org/?version=24.10.1&target=ramips%2Fmt7621&id=asus_rt-

and the installation instructions https://openwrt.org/toh/asus/rt-ax54

4

Flash it, if it bricks your router, they weren't.

5

As you may have already discovered, this is not a good assumption. Unless there is specific verified documentation to indicate that the hardware is the same, it should always be assumed there are differences (otherwise, they wouldn't have changed the version number). The potential deltas are obviously on a spectrum -- some might be largely irrelevant to the firmware (for example, if they changed a component in the power circuitry), whereas others can be materially different to the point of being entirely incompatible (such as the use of an entirely different chipset).

At this point, you might want to open the device and evaluate all the hardware to try to figure out if any of the fundamental parts changed.... compare this against the documentation of the RT-AX54/RT-AX1800U.

6

Get the dmesg boot log via diagnostic ssh session.

7

I researched it and found that it uses the same chip and only differs slightly in the way it boots. I'm not very good at this to be able to intervene much in the hardware.

8

can you guide me how to do this, this is my first time

9

In asuswrt web - find section "system log", if it is full with firewall log disable those, reboot router and copy a clean boot log to a text editor like notepad++
Have a look at it - "linux version" at its start, memory amount, flash storage "mtd" and "ubi"
Copy / paste whole log into <\> code box here.

10

That's good, but it isn't a guarantee that the devices are actually identical. There could be important other parts that are not the same -- flash chips, RAM, pinouts, flash layout, etc.

That could be a big deal, too. But it does depend on the details of this statement.

All that said, be aware that if you flash this device and it's not actually identical (or truly close enough), you may brick it.

11

About brick - as long as boot partition is intact you can restore factory firmware using asus fw restoration tool.
Sometimes V2 is filogic where ramips was, totally different 20x faster soc

12

this is the log please help me thank you

13

It is 64bit filogic cpu , not mt7621 like on v1. New, much better device.
Will you be handy with asuswrt and putty SSH to get partition infos etc?
And opening the device to find serial header and connect usb tty adapter?

14

I can give you any information you want but I don't know how to open the device.

15

Then I guess we can close this thread...

16

Indeed, bootlog is on the pastebin for future explorers.

1 Like
17

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