My understanding is that you can build and copy a Paravan image but you can't distribute it.
what will happen if you distribute it ?? the SWAT, the FBI and the Mossad will knock to your door at 5 AM ?
Our little device now has hardware watchdog support https://github.com/lede-project/source/commit/3fbf3ab44f5cebb22e30a4c8681b13341feed6a6 so @dissent1 I guess kmod-softdog should be removed from target/linux/ramips/image/mt7621.mk
I just did a compile with kmod-softdog removed and it seems like I still have a running and functional watchdog in the router 
My device is running stable both on 2.4Ghz and 5Ghz with all kind of different wireless devices connected (TV, android, iOS, printer, Sonos ...). I'm using the following config for reference.
config wifi-device 'radio0'
option type 'mac80211'
option hwmode '11g'
option path 'pci0000:00/0000:00:00.0/0000:01:00.0'
option htmode 'HT20'
option country 'DK'
option channel '13'
option log_level '4'
option txpower '17'
config wifi-iface 'default_radio0'
option device 'radio0'
option network 'lan'
option mode 'ap'
option ssid '...'
option key '...'
option encryption 'psk2+ccmp'
option wpa_group_rekey '1800'
config wifi-device 'radio1'
option type 'mac80211'
option hwmode '11a'
option path 'pci0000:00/0000:00:01.0/0000:02:00.0'
option htmode 'VHT80'
option channel '128'
option country 'DK'
option log_level '4'
option txpower '17'
config wifi-iface 'default_radio1'
option device 'radio1'
option network 'lan'
option mode 'ap'
option ssid '...'
option key '...'
option encryption 'psk2+ccmp'
option wpa_group_rekey '1800'Hi there. I posted a few days ago saying that my router was bricked and I was going to try UART. The router was stuck in a boot loop after a failed flash.
EDIT.....
I have now successfully recovered my router. What I did was to flash the kernel0.bin file that was kindly provided to me using option 2 flash using TFTP option in the U-Boot menu. When the router rebooted I was prompted (in the putty serial session) to press the reset button and the router flashed itself from the miwifi.bin file I had in my USB stick. Thanks for everyones help again.
I have now successfully connected a putty session using a UART cable, but I am stuck as to what commands to use. I've tried to flash a lede sys upgrade bin, using option 2 Load system code then write to Flash using TFTP, but when the router reboots it goes back into a boot loop.
I originally deleted the kernel0 partition, and I do have a copy of kernel0.bin that someone kindly made available.Is there some way to restore this onto the router, so that I can use the USB restore method?
Or is there some way to use the TFTP flash to reset my router correctly?
Any help would be much appreciated
>===================================================================
MT7621 stage1 code 10:33:11 (ASIC)
CPU=50000000 HZ BUS=12500000 HZ
==================================================================
Change MPLL source from XTAL to CR...
do MEMPLL setting..
MEMPLL Config : 0x11100000
3PLL mode + External loopback
=== XTAL-40Mhz === DDR-1200Mhz ===
PLL4 FB_DL: 0xe, 1/0 = 573/451 39000000
PLL3 FB_DL: 0x10, 1/0 = 665/359 41000000
PLL2 FB_DL: 0x17, 1/0 = 628/396 5D000000
do DDR setting..[00320381]
Apply DDR3 Setting...(use customer AC)
0 8 16 24 32 40 48 56 64 72 80 88 96 104 112 120
--------------------------------------------------------------------------------
0000:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0001:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0002:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0003:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0004:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0005:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0006:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0007:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0008:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0009:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
000A:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
000B:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
000C:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
000D:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1
000E:| 0 0 0 0 0 0 0 0 0 1 1 1 1 1 1 1
000F:| 0 0 0 0 1 1 1 1 1 1 1 1 1 1 0 0
0010:| 1 1 1 1 1 1 1 1 1 0 0 0 0 0 0 0
0011:| 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0
0012:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0013:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0014:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0015:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0016:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0017:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0018:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
0019:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
001A:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
001B:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
001C:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
001D:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
001E:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
001F:| 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
rank 0 coarse = 15
rank 0 fine = 72
B:| 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0
opt_dle value:11
DRAMC_R0DELDLY[018]=0000201F
==================================================================
RX DQS perbit delay software calibration
==================================================================
1.0-15 bit dq delay value
==================================================================
bit| 0 1 2 3 4 5 6 7 8 9
\--------------------------------------
0 | 9 6 7 9 6 6 7 5 6 6
10 | 7 7 7 10 7 7
\--------------------------------------
\
\==================================================================
2.dqs window
x=pass dqs delay value (min~max)center
y=0-7bit DQ of every group
input delay:DQS0 =31 DQS1 = 32
==================================================================
bit DQS0 bit DQS1
0 (1~62)31 8 (1~59)30
1 (1~58)29 9 (2~62)32
2 (1~58)29 10 (1~60)30
3 (1~58)29 11 (0~58)29
4 (1~60)30 12 (1~60)30
5 (1~60)30 13 (1~60)30
6 (1~62)31 14 (1~62)31
7 (0~62)31 15 (1~59)30
==================================================================
3.dq delay value last
==================================================================
bit| 0 1 2 3 4 5 6 7 8 9
\--------------------------------------
0 | 9 8 9 11 7 7 7 5 8 6
10 | 9 10 9 12 8 9
==================================================================
==================================================================
TX perbyte calibration
==================================================================
DQS loop = 15, cmp_err_1 = ffff0000
dqs_perbyte_dly.last_dqsdly_pass[0]=15, finish count=1
dqs_perbyte_dly.last_dqsdly_pass[1]=15, finish count=2
DQ loop=15, cmp_err_1 = ffff0000
dqs_perbyte_dly.last_dqdly_pass[0]=15, finish count=1
dqs_perbyte_dly.last_dqdly_pass[1]=15, finish count=2
byte:0, (DQS,DQ)=(8,8)
byte:1, (DQS,DQ)=(8,8)
20,data:88
[EMI] DRAMC calibration passed
\
\===================================================================
MT7621 stage1 code done
CPU=50000000 HZ BUS=12500000 HZ
===================================================================
\
\
\-Boot 1.1.3 (Apr 17 2017 - 17:00:02)
\
Board: Ralink APSoC DRAM: 256 MB
Power on memory test. Memory size= 256 MB...OK!
relocate_code Pointer at: 8ffac000
\
Config XHCI 40M PLL
\******************************
Software System Reset Occurred
\******************************
Allocate 16 byte aligned buffer: 8ffdffd0
Enable NFI Clock
\# MTK NAND # : Use HW ECC
NAND ID [C8 D1 80 95 42]
Device not found, ID: c8d1
Not Support this Device!
chip_mode=00000001
Support this Device in MTK table! c8d1
select_chip
[NAND]select ecc bit:4, sparesize :64 spare_per_sector=16
Signature matched and data read!
load_fact_bbt success 1023
load fact bbt success
[mtk_nand] probe successfully!
mtd->writesize=2048 mtd->oobsize=64, mtd->erasesize=131072 devinfo.iowidth=8
..============================================
Ralink UBoot Version: 5.0.0.0
\--------------------------------------------
ASIC MT7621A DualCore (MAC to MT7530 Mode)
DRAM_CONF_FROM: Auto-Detection
DRAM_TYPE: DDR3
DRAM bus: 16 bit
Xtal Mode=5 OCP Ratio=1/4
Flash component: NAND Flash
Date:Apr 17 2017 Time:17:00:02
============================================
icache: sets:256, ways:4, linesz:32 ,total:32768
dcache: sets:256, ways:4, linesz:32 ,total:32768
\
\##### The CPU freq = 880 MHZ ####
estimate memory size =256 Mbytes
\#Reset_MT7530
set LAN/WAN LWLLL
\
Please choose the operation:
1: Load system code to SDRAM via TFTP.
2: Load system code then write to Flash via TFTP.
3: Boot system code via Flash (default).
4: Entr boot command line interface.
7: Load Boot Loader code then write to Flash via Serial.
9: Load Boot Loader code then write to Flash via TFTP. 4
You choosed 4
0
\
\
\: System Enter Boot Command Line Interface.
\
U-Boot 1.1.3 (Apr 17 2017 - 17:00:02)
MT7621 #hello,
in the snapshot there is a file mir3g-initramfs-kernel.bin, what is it for ?
http://downloads.lede-project.org/snapshots/targets/ramips/mt7621/
in the hammer tutorial here: Xiaomi WiFi Router 3G
we never use that file ?
Is the tutorial still ok to follow ?
At last I got the serial connection running, had to swap the tx pin with the rx pin.
I now have one unnecessay line in the uboot configuration storage.
flag_last_succes=0
instead of
flag_last_success=0
because I mistyped and saved the change. Can I get rid of the line somehow?
NVM I had to do "setenv flag_last_succes" without a varaiable.
Now I have build a padavan firmware with the prometheus script on a physically different network/location.
Someone knows how I can flash the trx file manually?
https://git.lede-project.org/?p=source.git;a=commit;h=f2107fc328ff7f9817fe9ca64f84bba9e32abfc6
Thanks! Just ordered one device.
What about wifi quality? Is it stable?
I am also very curious about the wifi stability and performance. Does anyone happen to have iperf3 results over both the 2.4ghz wifi and the 5ghz wifi?
hi all,
I receive my xiaomi 3G yestarday.
I have read all signgle post on this thread.
But is see today the table off hardware is updated with this snapshot image http://downloads.lede-project.org/snapshots/targets/ramips/mt7621/lede-ramips-mt7621-mir3g-squashfs-sysupgrade.tar
So i am not sure wath instalation process to use?
do i need to folow:
- the install step from hammer folowing
by an upgrade using the lede-ramips-mt7621-mir3g-squashfs-sysupgrade.tar - install using the pr step
- install using the dror process
And can someboday explain how to backup the original firmware.
I have read a post from hammer where he explain he don't do the command erase kernel but i am bot sure.
Hi, read notes of this commit
https://git.lede-project.org/?p=source.git;a=commit;h=f2107fc328ff7f9817fe9ca64f84bba9e32abfc6
some feedback,
I have followed the tutorial from hammer. and everything work.
But have the same problem for radio 2.4 GHZ
log show daemon.notice hostapd: wlan0: STA XX:XX:XX:XX:XX:XX IEEE 802.11: did not acknowledge authentication response
i think is related to the driver https://github.com/openwrt/mt76/issues/114
Hi hammer,
could you explain how to compile and install the firmware with the hardware whatchdog?
I’ve updated @hammer instructions with recent findings, @r43k3n could you put these instructions into 1st post?
This is how I got LEDE installed. Some of the steps can be done differently. I used this for inspiration https://www.youtube.com/watch?v=CSHNyo5QxaQ
Unbox router
Connect to the router using WiFi
Goto http://192.168.31.1
Go through the wizard to set passwords for the router + wifi
Reconnect to the router using WiFi
Goto http://192.168.31.1
Logon and find the page where you can upgrade the firmware look for a big yellow dot with an “i” inside. You will see the version number of the router and there is a button below where you can browse for a file. Flash miwifi_r3g_firmware_c2175_2.25.122.bin (developer firmware) and wait a few minutes.
Download https://play.google.com/store/apps/details?id=com.xiaomi.router to your phone/tablet (there is also an iOS app)
Open “Mi Wi-Fi” app (and sign-up) and sign-in to your account. Router will be detected and added to your account (assuming you are connected to the WiFi on the router and the routers WAN port is connected to Internet).
On a PC, visit http://d.miwifi.com/rom/ssh and sign-in to you account. You will get to a page that should display your router, the root password and a download button. Hit the button to get miwifi_ssh.bin
Format USB drive using FAT32 and copy miwifi_ssh.bin, lede-ramips-mt7621-mir3g-squashfs-kernel1.bin and lede-ramips-mt7621-mir3g-squashfs-rootfs0.bin to the USB drive
Cut the power the router, put the USB drive in the router, press and hold “reset” button (with a paper-clip), power on the router (while holding reset). When the router starts flashing yellow release the reset button. Wait until router has rebooted and you should (finally…) have SSH access.
Login to the router using SSH using the “root” as username and the (root) “password” from http://d.miwifi.com/rom/ssh
In SSH console
cd /extdisks/sda1 (can be different if you remove and reinsert the usb stick)
mtd write lede-ramips-mt7621-mir3g-squashfs-kernel1.bin kernel1
mtd write lede-ramips-mt7621-mir3g-squashfs-rootfs0.bin rootfs0
nvram set flag_try_sys1_failed=1
nvram commit
reboot
LEDE should be installed and available at 192.168.1.1 (with WiFi disabled I assume)
Upgrading to a newer snapshot can be done using the regular methods (from the command-line using sysupgrade or through LuCI) using lede-ramips-mt7621-mir3g-squashfs-sysupgrade.tar
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@dissent1 I included your instructions in first post. I modified it a bit for better readability. I hope you don't mind.
1 Like
I would recommend adding the link to download the dev build on step 8, also it would be more clear if download the android app link will be on the next step.
In addition, could you please add a section of known issues and add there the issue which affect some of the users when trying to connect to the 2.4GHz:
daemon.notice hostapd: wlan0: STA XX:XX:XX:XX:XX:XX IEEE 802.11: did not acknowledge authentication response
I have been testing Openvpn client, as one of the main attractions of this router was the relatively powerful processor compared to price.
However using Lede I could only use 25% of the CPU, just 1 thread, and this is proving a real bottleneck and is reducing my download speed by 60%.
Has anyone tried using the IRQBalance package? Is there a method to give the encryption processing it's own dedicated thread?
At present I am testing Openvpn in Padavan, and this seems to have the same problem.
Using an android TV box, without Openvpn I get 50Mbps.
With OpenVPN running as an app on the TV Box, over ethernet I get 46Mbps
Over WiFi I get about the same.
With OpenVPN running as a client on the router over ethernet I get 30Mbps, over Wifi I get 20Mbps.
I was told sometime ago that OpenVPN only works on 1 thread of the CPU. I don't know if this is an OpenVPN or LEDE limitation. Have you tried IPsec?
Per your request I added "Known Issues" section. If there are any other known issues, even if they are temporary it's better to mention them right know to give potential buyers better image of the situation. We can delete them later.
I don't have this device on hand. If you can provide those link you mentioned I will add them to the instruction.
Great, the latest dev FW can be downloaded from here:
http://www.miwifi.com/miwifi_download.html ,
The direct link to dev FW 2175.2.25.122: http://bigota.miwifi.com/xiaoqiang/rom/r3g/miwifi_r3g_firmware_c2175_2.25.122.bin