openwrt-6.x/target/linux/ramips/image
Olgun Demir c3b8108a2b ramips: Add support for Xiaomi MiWiFi 3A
The Xiaomi MiWiFi 3A wireless router has a similar system architecture as the Xiaomi Mi 4A router, which is already officially supported by OpenWrt.

Product website: https://www.mi.com/miwifi3a

Device specification
--------------------
SoC:      MT7628AN MIPS_24KEc @ 580 MHz 2.4G-bgn 2x2
WiFi:     MT7612EN 5G-an, ac 80 MHz 2T2R
Flash:    16 MB
DRAM:     64 MB
Switch:   MT7628AN (integrated in SoC)
Ethernet: 1 x 10 /100 Mbps
USB:      None
Antennas: 2 x 2,4 GHz and 2 x 5 GHz (all are external and non-detachable)
LEDs:     blue/red/amber
Buttons:  Reset
Serial:   115200,8n1

MAC addresses as verified by OEM firmware:
------------------------------------------
use address source
LAN *:DD factory 0x28
WAN *:DD factory 0x28
2g *:DE factory 0x4
5g *:DF factory 0x8004

OEM firmware uses VLAN's to create the network interface for WAN and LAN.

Bootloader info:
----------------
The stock bootloader uses a "Dual ROM Partition System".
OS1 is a deep copy of OS2.
The bootloader starts OS2 by default.
To force start OS1 it is needed to set "flag_try_sys2_failed=1".

How to install:
---------------
1- Use OpenWRTInvasion to gain Telnet, SSH and FTP access: https://github.com/acecilia/OpenWRTInvasion
[IP: 192.168.31.1 | Username: root | Password: root | FTP-Port: 21]
2- Connect to router using telnet or ssh.
3- Backup all partitions. Use command "dd if=/dev/mtd0 of=/tmp/mtd0". Copy /tmp/mtd0 to computer using ftp.
4- Copy openwrt-ramips-mt76x8-xiaomi_miwifi-3a-squashfs-sysupgrade.bin to /tmp in router using ftp.
5- Enable UART access and change start image to OS1.

nvram set uart_en=1
nvram set flag_last_success=1
nvram set boot_wait=on
nvram set flag_try_sys2_failed=1
nvram commit

6- Erase OS1 & OS2 and install OpenWrt

mtd erase OS1
mtd erase OS2
mtd -r write /tmp/openwrt-ramips-mt76x8-xiaomi_miwifi-3a-squashfs-sysupgrade.bin OS1

Credits:
--------
This PR is based on the work of Zehao Zhang (Github: @ZZH-Finalize) that he had published in the PR: #15698

Signed-off-by: Olgun Demir <olgun.demir@mail.com.tr>
Link: https://github.com/openwrt/openwrt/pull/18427
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
2025-04-20 21:50:22 +02:00
..
lzma-loader ramips: lzma-loader: use default uart for rt305x 2024-01-02 22:10:34 +01:00
common-sercomm.mk ramips: add support for Sercomm CPJ routers 2023-11-25 01:11:18 +01:00
common-tp-link.mk ramips: introduce TP-Link v1 header OKLI image recipe 2024-10-06 14:07:37 +02:00
Makefile ramips: move zyimage creation to include/image-commands.mk 2024-11-28 22:33:21 +01:00
mt76x8.mk ramips: Add support for Xiaomi MiWiFi 3A 2025-04-20 21:50:22 +02:00
mt7620.mk ramips: add support for Hongdian H8922 v30 2025-03-10 00:42:44 +01:00
mt7621.mk ramips: add support for Mofi 5500 2025-04-18 13:56:26 +02:00
rt288x.mk treewide: Disable building 32M RAM devices 2023-05-21 01:08:22 +02:00
rt305x.mk treewide: rename ZyXEL to Zyxel 2024-08-25 15:08:25 +02:00
rt3883.mk ramips: fix image recipe for ASUS RT-N56U 2024-07-13 14:30:42 +02:00