@changeway I test your image and others, here the result:

Distance 1mt/3 feets enviroment with a lot of wifi signals.
Use Wifi Analyzer app over HTC M8 Android 6 to measure.

Format of test:
freq -> best signal / worst signal detected (in 60 seconds of monitoring)

Stock firmware from Xiaomi
2.4 --> -35 / -38
5   --> -39 / -42

Stable version - CC 15.05.01
2.4 --> -57 / -61
5   --> -55 / -58

Trunk - some commit with kernel 4.3 - http://git.openwrt.org/openwrt.git?p=op … ce6ea6df9c
2.4 --> -39 / -56
5   --> -47 / -54

Trunk r49161 (from few days ago... unstable on 2.4G)
2.4 --> -36 / -41
5   --> -48 / -51

Fork of changeway - https://github.com/changeway/openwrt_CC_for_MiWifi_Mini
2.4 --> -34 / -36
5   --> -45 / -47

Hello @changeway
Just a short feedback: I have been using your firmware for a few days now. Runs stable, no problems on the 2.4 Ghz band whatsoever. Reception results are similar to what @gazambuja measured. Stock firmware (downgraded to english Version 2.2.100 ) had a higher troughput than your fork (might have other reasons, eg. congestion), but reception generally is on the same level.
Using CC 15.05 with my xiaomi the 2.4 Ghz Signal was too weak for my setting. 
Thanks for your fork!

Only problem: I can't add the necessary (kernel) packages for the usage of my hostless LTE modem. Well - I guess I'll use some spare time on the weekend and try to biuild my own FW with the packages included. Hopefully I suceed and if I do not brick my router (never built FW from scratch before )

Thanks @changeway for your afford

I have successfully compile your image and upload to router. I have one question: on your code only supported wifi mode is  AP mode ? What about WDS ?

Hello @changeway
Just a short feedback: I have been using your firmware for a few days now. Runs stable, no problems on the 2.4 Ghz band whatsoever. Reception results are similar to what @gazambuja measured. Stock firmware (downgraded to english Version 2.2.100 ) had a higher troughput than your fork (might have other reasons, eg. congestion), but reception generally is on the same level.
Using CC 15.05 with my xiaomi the 2.4 Ghz Signal was too weak for my setting. 
Thanks for your fork!

Only problem: I can't add the necessary (kernel) packages for the usage of my hostless LTE modem. Well - I guess I'll use some spare time on the weekend and try to biuild my own FW with the packages included. Hopefully I suceed and if I do not brick my router (never built FW from scratch before )

Hi!

This openwrt version is safe? I try it, but when i go to 192.168.1.1 to Luci interface, the browser wrote, the signiture not retail openwrt, and not correct. Can i remove this interface, and use the original? If i can, how?

LameDuck wrote:

Hello @changeway
Just a short feedback: I have been using your firmware for a few days now. Runs stable, no problems on the 2.4 Ghz band whatsoever. Reception results are similar to what @gazambuja measured. Stock firmware (downgraded to english Version 2.2.100 ) had a higher troughput than your fork (might have other reasons, eg. congestion), but reception generally is on the same level.
Using CC 15.05 with my xiaomi the 2.4 Ghz Signal was too weak for my setting. 
Thanks for your fork!

Only problem: I can't add the necessary (kernel) packages for the usage of my hostless LTE modem. Well - I guess I'll use some spare time on the weekend and try to biuild my own FW with the packages included. Hopefully I suceed and if I do not brick my router (never built FW from scratch before )

you have to change this file /etc/opkg/distfeeds.conf
change openwrt version from '15.05' to '15.05.1' in all the lines
eg
change
src/gz chaos_calmer_base http://downloads.openwrt.org/chaos_calm … kages/base
to
src/gz chaos_calmer_base http://downloads.openwrt.org/chaos_calm … kages/base

opkg update
opkg install <package-name> --force-depends

this has worked for me give it a try

Hi All,
I have two Xiaomi Wifi Mini, and also found the 2.4G connection issue.
I did some research.
There are two project related to MT7621 and MT7612E
WITI : https://github.com/mqmaker/witi-openwrt/
Firefly : https://github.com/FireWRT/FireWRT-Open … ireWRT-SDK

and Mediatek driver for openwrt download
http://www.openwrtdl.com/wordpress/mt76 … B%E8%BD%BD
I believe these driver are released by MediaTek.

I got the mt7620 drivers and patches from these project, and try to merge them into OpenWRT CC.

I folk from openwrt github CC branch and use the mt7620 and mt76x2e driver, also patch luci wireless pages for wifi settings.
https://github.com/changeway/openwrt_CC … i_Mini.git

This is the image I use now
https://changeway.github.io/openwrt/ope … pgrade.bin

There are still issues for using this driver and default configure, but much better than openwrt rt2800 driver using on mt7620.
Any suggestion is welcome.

changeway wrote:

Hi All,
I have two Xiaomi Wifi Mini, and also found the 2.4G connection issue.
I did some research.
There are two project related to MT7621 and MT7612E
WITI : https://github.com/mqmaker/witi-openwrt/
Firefly : https://github.com/FireWRT/FireWRT-Open … ireWRT-SDK

and Mediatek driver for openwrt download
http://www.openwrtdl.com/wordpress/mt76 … B%E8%BD%BD
I believe these driver are released by MediaTek.

I got the mt7620 drivers and patches from these project, and try to merge them into OpenWRT CC.

I folk from openwrt github CC branch and use the mt7620 and mt76x2e driver, also patch luci wireless pages for wifi settings.
https://github.com/changeway/openwrt_CC … i_Mini.git

This is the image I use now
https://changeway.github.io/openwrt/ope … pgrade.bin

There are still issues for using this driver and default configure, but much better than openwrt rt2800 driver using on mt7620.
Any suggestion is welcome.

wow, thanks for adding the wifi drivers and patches to LUCI.

This afternoon I've been testing and works great. But I have had many problems when installing new packages, dependency errors with the kernel and have been unable to mount a pendrive.

For this reason I have recompiled (today 25.4.2016) using your repository. But there is the same error with the dependencies... :C

If someone wants to test this version I leave here. It is not the "clean" image, it comes with what I always use: luci with ssh, all that you need to make extroot.

PD: If you followed some tutorial to change the drivers, you can share it?. I would like to learn the process.

Hi all,
after testing the firmaware of changeway and been looking for a solution to the problem of dependency kernel. To fix it, I compiled the drivers (kmod-mt7620 and kmod.mt76x2e) and modified luci with SDK 15.05.1. After using the Image Builder I created a new image removing the default drivers and inserting new ones.

Compiling with the SDK CC_15.05.1 there is no dependency problems.

But if I have taken the surprise,new version has 3 wifi interfaces. The interface of 2.4GHz it's well configured, but the 5GHz wifi is misconfigured.
It is solved by editing the /etc/config/wireless file and putting the correct wifi-device name, same as changeway version.

I leave the firmaware, a .zip with the packages (compatible with 15.05.1) and one example of the wireless config file.

/etc/config/wireless

config wifi-device 'mt7612e'
    option type 'mt7612e'
    option vendor 'ralink'
    option band '5G'
    option autoch '2'
    option radio '1'
    option wifimode '15'
    option bw '2'
    option aregion '7'
    option bgprotect '0'
    option beacon '100'
    option dtim '1'
    option fragthres '2346'
    option rtsthres '2347'
    option txpower '100'
    option txpreamble '1'
    option shortslot '1'
    option txburst '1'
    option pktaggre '1'
    option ieee80211h '1'
    option ht_opmode '0'
    option ht_gi '1'
    option ht_rdg '1'
    option ht_stbc '1'
    option ht_amsdu '1'
    option ht_autoba '1'
    option ht_badec '0'
    option ht_distkip '1'
    option ht_ldpc '0'
    option vht_stbc '1'
    option vht_sgi '1'
    option vht_bw_sig '0'
    option vht_ldpc '0'
    option ht_txstream '2'
    option ht_rxstream '2'
    option channel '48'
    option country 'US'

config wifi-iface
    option device 'mt7612e'
    option ifname 'rai0'
    option mode 'ap'
    option ssid 'OpenWrt-5GHz'
    option wmm '1'
    option apsd '0'
    option encryption 'psk2+ccmp'
    option key '12345678'
    option network 'lan'

config wifi-device 'mt7620'
    option type 'mt7620'
    option vendor 'ralink'
    option band '2.4G'
    option auotch '2'
    option radio '1'
    option bw '1'
    option country 'US'
    option bgprotect '0'
    option beacon '100'
    option dtim '1'
    option fragthres '2346'
    option rtsthres '2347'
    option txpower '100'
    option txpreamble '1'
    option shortslot '1'
    option txburst '1'
    option pktaggre '1'
    option ieee80211h '1'
    option ht_bsscoexist '0'
    option ht_extcha '1'
    option ht_opmode '0'
    option ht_gi '1'
    option ht_rdg '1'
    option ht_stbc '1'
    option ht_amsdu '1'
    option ht_autoba '1'
    option ht_badec '0'
    option ht_distkip '1'
    option ht_ldpc '0'
    option ht_txstream '2'
    option ht_rxstream '2'
    option wifimode '7'
    option region '1'
    option channel '4'

config wifi-iface
    option device 'mt7620'
    option ifname 'ra0'
    option mode 'ap'
    option ssid 'OpenWrt'
    option wmm '1'
    option apsd '0'
    option encryption 'psk2+ccmp'
    option key '12345678'
    option network 'lan'

OpenWrt image
packages.zip

Hi nextlvl,
thanks for the effort, and the quality work.

I put your FW image on one of my mini's and 2.4G and 5G seem to be working fine.
i did not see the '3 wifi radios' , in fact 'iw list' does not return anything but 'nl80211 not found.'
(after using your config file) both radios seem to be happy, although luci does not correctly report associated devices.

one more remark, in the wireless file you posted the mt7620 is configured with option auotch '2' on line 54.
shouldn't that be option autoch '2'?

thanks again!

Hi all,
after testing the firmaware of changeway and been looking for a solution to the problem of dependency kernel. To fix it, I compiled the drivers (kmod-mt7620 and kmod.mt76x2e) and modified luci with SDK 15.05.1. After using the Image Builder I created a new image removing the default drivers and inserting new ones.