Getting 25.12 onto Mikrotik RB411UAHR

Mark Ter Morshuizen mark at honingklip.co.za
Sat Jul 18 03:08:16 PDT 2026


Hi,

I'm trying to get 25.12 to work on a Mikrotik Routerboard 411UAHR.

I end up with no kernel messages whatsoever.

8<------------------------------------------------------------------------------

RouterBOOT booter 6.49.18

RouterBoard 411UAHR

CPU frequency: 680 MHz
   Memory size:  64 MiB
     NAND size: 128 MiB

Press any key within 2 seconds to enter setup..
trying bootp protocol.... OK
Got IP address: 192.168.0.45
resolved mac address 00:15:C5:F6:B3:60
Gateway: 192.168.0.1
transfer started .................................................... 
transfer ok, time=2.67s
setting up elf image... OK
jumping to kernel code


OpenWrt kernel loader for AR7XXX/AR9XXX
Copyright (C) 2011 Gabor Juhos <juhosg at openwrt.org>
Decompressing kernel... done!
Starting kernel at 80060000...

<blinking cursor here>

8<------------------------------------------------------------------------------

I've reset the whole build environment to defaults after trying all 
sorts of changes to get this to work.

I have a very simple .dts to try to just get serial output:

8<------------------------------------------------------------------------------

// SPDX-License-Identifier: GPL-2.0-or-later OR MIT

#include "ar7100_mikrotik_routerboard-4xx.dtsi"
/ {
     compatible = "mikrotik,rb411, qca,ar7161";
     model = "Mikrotik RouterBOARD 411/A/AH/U";

     memory at 0 {
         device_type = "memory";
         reg = <0x0 0x04000000>; /* 64MB RAM */
     };

     chosen {
         bootargs = "console=ttyS0,115200 root=/dev/mtdblock3 
rootfstype=squashfs";
         stdout-path = "serial0:115200n8";
     };

     aliases {
         serial0 = &uart;
     };
};

&uart {
     status = "okay";
};
8<------------------------------------------------------------------------------

What am I missing here?

-- 
Mark Ter Morshuizen




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