Bricked Xiaomi Mi Router 4A (MIR4A) 100M international version

Installing and Using OpenWrt
1

Hello,

I just bricked my new Xiaomi Mi Router 4A (MIR4A) 100M.

I use OpenWRTInvasion method with this image: https://downloads.openwrt.org/releases/19.07.7/targets/ramips/mt76x8/openwrt-19.07.7-ramips-mt76x8-xiaomi_mir4a-100m-squashfs-sysupgrade.bin

I read that there two different version of MIR4A routers, with different layouts, mine is SKU: DVB4230GL

Could I debrick my device?

Which image could I need to flash to my device?

I will really appreciate your help.

Kind regards.

2

serial recovery might work https://git.openwrt.org/?p=openwrt/openwrt.git;a=commit;h=5ff5c9bce6b6e51060c272521528b5afd789e9ab

3

Thanks,

But I have no way to make a serial connection.

I have other router with same SKU. Anyone could guide how to flash OpenWRT on it?

Which firmware is the good one for my device?

Kind regards.

4

Seems your version is the international one, while the fw assume it's Chinese.

1 Like
5

Thanks for the links.

I recover the device installing "miwifi_r4ac_all_c4b35_2.18.28.bin" image with MIWIFIRepairTool (disable the antivirus).

Then upgrade from 2.18.28 to 2.18.51 in the web interface and then install OpenWRT with OpenWRTInvasion.

Now I have 2 Mi Router 4A (100M version) running with OpenWRT.

Thanks for all your help.

Best regards.

3 Likes
6

If your problem is solved, please consider marking this topic as [Solved]. See How to mark a topic as [Solved] for a short how-to.

1 Like
7

Hi @jlazkano

May I know if you successfully installed OpenWRT using the same link as the opening post or with different link?

https://downloads.openwrt.org/releases/19.07.7/targets/ramips/mt76x8/openwrt-19.07.7-ramips-mt76x8-xiaomi_mir4a-100m-squashfs-sysupgrade.bin

8

Hello,

Same link. But before install this file I need to flash chinnese images: 2.18.28 -> 2.18.51 -> OpenWRT

Regards.

1 Like
9

Thank you @jlazkano, exactly what I needed.

Bootloop after flashing OpenWrt from global firmware v3.xx.xx, follows what you did and it's up and running now.

Links:

MIWIFIRepairTool
http://bigota.miwifi.com/xiaoqiang/tools/MIWIFIRepairTool.x86.zip

MIWIFIRepairTool tutorial

Chinese stock firmware
https://bigota.miwifi.com/xiaoqiang/rom/r4ac/miwifi_r4ac_all_c4b35_2.18.28.bin
https://bigota.miwifi.com/xiaoqiang/rom/r4ac/miwifi_r4ac_firmware_e8a04_2.18.51.bin

2 Likes
10

Thanks for the link.

It will be great to have a entry in the wiki as our "big brother": https://openwrt.org/inbox/toh/xiaomi/xiaomi_mi_router_4a_gigabit_edition

Someone could start the wiki? I don't know how to do it. I could help to complete.

Kind regards.

1 Like
11

See Applying for OpenWrt wiki account

1 Like
12

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