Alroad
1
Hello, dear friend, sorry to bother you, I need your wise advice. I have a router D-Link DIR-853 r3, MT7621DAT, can i install firmware from DIR-853 a3?
I looked OEM Device DIR-853 r3 and compared them with DIR-853 a3. they are completely identical. Except for one thing, the paper manual that comes with the box DIR-853 r3, says USB 2.0 and the version DIR-853 a3. indicated is USB-3.0.
But on the D-Link website in OEM Device DIR-853 r3 the USB version is not indicated.
Below I attach all the information that I found.
DIR-853 R3
[file:///X:/d-link/document.pdf](file:///X:/d-link/document.pdf)
If you can afford, in a worst case scenario, bricked device, go for it.
Please remove all screen dumps but the 1st one, the rest is useless.
1 Like
Alroad
3
Thanks for your reply.
If you have any other opinions I'd be glad to hear them.
Ok, my bad the 1st one from the manual, with the hw specs, not the webUi 
We have no other option for you, it's your device, do as you please.
1 Like
Alroad
5
I'll try to do this. I'll write the result later.
1 Like
Lucky1
6
The d-link device that have -Ax have a different bootloader and memory layout
then the -Rx devicses
the only other nand -Rx device is the DIR-2150-R1 so far
so on the DIR-853-A3 won't work if force installed, it may break things
their bootloaders are different, one is label "recover interface" and the other is "failsafe" I think
it would be very easy to make the firmware for this model
it has to be created by someone
maybe you !
2 Likes
Alroad
7
Hi Lucky1 . That's a good idea, I could do it, but I have no experience.
Lucky1
8
Depends on how much you don't know and what you are willing to learn
there is lots of documentation on how to build OpenWrt
can just start there would need a current supported device to start tho
