Xiaomi MiWiFi 3G: OpenWrt Compatibility Report

The Xiaomi MiWiFi 3G runs OpenWrt 25.12.2 on the ramips/mt7621 target, and has been supported since 21.02.0. Its WiFi 5 (AC) wireless on the mt76 driver rates good for open-source driver support (0.80/1.0), installation is rated moderate, and it is no longer sold new.

Drivers: Good (0.80) WiFi 5 (AC) Install: moderate

Hardware data and retail listings last checked .

Discontinued. This model is no longer sold new, so this page is kept as a reference for people who already own one. See current alternatives.

Where to buy

We have no current retail listing for the Xiaomi MiWiFi 3G, which is no longer sold new. See current alternatives for devices you can still buy today.

Specifications

SoC MediaTek MT7621A
CPU 2 cores @ 880 MHz
RAM 128 MB
Flash 16 MB
Ethernet ports 3
WiFi generation WiFi 5 (AC)
Radios 2.4GHz: b/g/n · 5GHz: a/n/ac
WLAN hardware MediaTek MT7603E, MediaTek MT7612E
WLAN driver mt76
OpenWrt target ramips / mt7621
Package architecture mipsel_24kc
Current release 25.12.2
Supported since 21.02.0
Install method U-Boot TFTP + serial recovery, see git-commit
Install difficulty moderate
Device type Home router
Estimated throughput 220 Mbps
Availability discontinued

Installing OpenWrt on the MiWiFi 3G

Installation on this device is rated moderate. Expect to use a recovery mode, TFTP or a vendor tool rather than a plain web upload. Documented methods: U-Boot TFTP + serial recovery, see git-commit.

Official OpenWrt device page for the MiWiFi 3G

Flashing third-party firmware can brick a router and usually voids the warranty. Always check that the firmware image matches your exact hardware version.

Hardware versions

The MiWiFi 3G ships in several hardware revisions with different chipsets. Match the version printed on your device label before flashing.

Version Target Current release WLAN hardware
V2 shown above ramips/mt7621 25.12.2 MediaTek MT7603E, MediaTek MT7612E
Base version ramips/mt7621 25.12.2 MediaTek MT7603EN, MediaTek MT7612EN

Still sold and well supported

Ruckus R500

WiFi 5 (AC) Drivers: Excellent $173

MikroTik RB962UiGS-5HacT2HnT (hAP ac)

WiFi 5 (AC) Drivers: Excellent $115

Ubiquiti UniFi UK-Ultra

WiFi 5 (AC) Drivers: Excellent $100

Not sure which fits? Take the 60-second quiz.