Xiaomi Mi Router 4A Gigabit Edition
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How to tell the different versions apart
There are multiple versions of the Xiaomi Mi Router 4A, International and Chinese and the method used to install OpenWRT differs. The SKU printed on the box differs according to the year of manufacture. This table is an intent to list them all so as to avoid bricking.
| Model | Mi Router 4A (MIR4A) | ||||||
|---|---|---|---|---|---|---|---|
| Alternate model name | R4AC | R4AG | |||||
| Version | 100M | Gigabit | |||||
| Target market | Chinese | International? | Chinese | International | International | ||
| SKU | DVB4222CN | DVB4230GL | DVB4218CN | DVB4224GL | |||
| Firmware | 2.28.132 | 2.28.84 | 2.20.30 | ||||
| Firmware language | English | Chinese | English? | ||||
| Label language | English | Chinese | English? | ||||
| PCB marking code | M49 R0101 | M43 R0101 | M43 R0201 | ||||
| Year available | 2019? | 2019 | 2021 | 2022? | |||
| Other notes | 2019 model is shielded | unshielded since 2020 | |||||
Devices
| Device | Type | PHY modes | Manuf. | CPU1 | FLA1 | RAM1 | Radio1 | Radio2 | Switch | Ethernet | Expan. | USB | FCC date | StockBL StockOS |
TPFirmware |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Xiaomi MiWiFi 4A (100M) FCC ID: 2AFZZR4AC has external images |
wireless router | abgn+ac AC1200 |
CoO: 
|
MediaTek MT7628DAN @ 580 MHz 1 cores |
Winbond 16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> |
64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br /> | MediaTek MT7628DAN 2x2:2, bgn Ant. conn: none specified |
MediaTek MT7612EN 2x2:2, an+ac Ant. conn: none specified |
MediaTek MT7628DAN |
100MbE 2 LAN 1 WAN |
2021-07-29 | U-Boot 1.1.3 Linux 3.10.14 OpenWrt |
OpenWrt | ||
| Xiaomi MiWiFi 4A (R4AG) FCC ID: 2AFZZR4A has internal images has external images |
wireless router | abgn+ac AC1200 MiWiFi |
Xiaomi CoO:
|
MediaTek MT7621AT @ 880 MHz 2 cores |
GigaDevice 16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> |
ESMT 128 MiB134,217,728 B <br />1,048,576 Kib <br />131,072 KiB <br />1,024 Mib <br />0.125 GiB <br /> |
MediaTek MT7603EN 2x2:2, bgn Ant. conn: soldered |
MediaTek MT7612EN 2x2:2, an+ac Ant. conn: soldered |
MediaTek MT7621AT |
1GbE 2 LAN 1 WAN |
2021-04-14 | U-Boot Linux 3.10.14 |
OpenWrt | ||
| Xiaomi MiWiFi 4AC International (R4AC) 100M FCC ID: 2AFZZR4AC has external images |
wireless router | abgn+ac AC1200 |
MediaTek MT7628DAN @ 575 MHz 1 cores |
16 MiB16,777,216 B <br />131,072 Kib <br />16,384 KiB <br />128 Mib <br />0.0156 GiB <br /> | 64 MiB67,108,864 B <br />524,288 Kib <br />65,536 KiB <br />512 Mib <br />0.0625 GiB <br /> | MediaTek MT7628DAN 2x2:2, bgn Ant. conn: none specified |
MediaTek MT7612EN 2x2:2, an+ac Ant. conn: none specified |
MediaTek MT7628DAN |
100MbE 2 LAN 1 WAN |
U-Boot |
OpenWrt |
