Action_OpenWrt_Xiaomi_R4AGv2: A Makefile repository from kuops

- Note: Welcome to try out it, You Agree to Proceed and Use at your own risk. **

Releases

openwrt-ramips-mt7621-xiaomi_mi-router-4a-gigabit-v2-squashfs-sysupgrade.bin

By the way, the password is password

There are two types of firmware releases

1. CSW-LEDE-R22.10.1 Kernel 5.4.214 (use coolsnowwolf/lede R22.10.1)
2. Openwrt

Projects divided into several folders:

1. LEDE and several version of opwrt-22.03.2 or  22.03.05 or 23.05, (v23.05 officially support R4AGv2)

- Note: LED lights NOT working properly with 22.03.2 . (LED start working properly with/from Openwrt-v23.03.03 )

How to built/Compile Openwrt firmware(bin)?

If you want to learn about it, you can visit the followings:

https://github.com/wbs306/Action_OpenWrt_Xiaomi_R4AG, Xiaomi R4A Gigabit Breed Flash (NOT for R4AGv2)
https://github.com/wbs306/lede

Thanks to wbs306

Many Thanks to wbs306's codes for Xiaomi R4AG V2 hardware changes! wbs306/lede@a2a3a4a
1. target/linux/ramips/dts/mt7621_xiaomi_mi-router-4a-gigabit-v2.dts
2. target/linux/ramips/image/mt7621.mk
3. target/linux/ramips/mt7621/base-files/etc/board.d/02_network
NOTE: from 23.03.3, you can fix LEDs, check hw2add folder
1. target/linux/ramips/mt7621/base-files/etc/board.d/01_leds
2. /include/kernel-defaults.mk

How to BREED flash Openwrt bin file?

Step#1 How to Telnet(talk) to R4AGv2 Router?

Successfully used @LordPinhead's code commit #99634522 to telnet XiaoMi R4A V2 Gigabit (RA4Gv2)

#Run the script
    pip3 install -r requirements.txt # Install requirements 
    python3 remote_command_execution_vulnerability_v2.py

Step#2 How to install bootloader "BREED" onto R4AGv2 router?

    1. Refer to this instrution https://www.right.com.cn/forum/thread-4007071-1-1.html
    (This instruction is just a reference, make your own judgements and adjustments to what you need)
    
    2. Go to https://breed.hackpascal.net, For RA4Gv2, download breed-mt7621-pbr-m1.bin 
    After successfully Telnet 192.168.31.1, use ftp app, copy it over to router's tmp folder.
    
    3. run the following script
    mtd -r write /tmp/breed-mt7621-pbr-m1.bin Bootloader

Step#3 How to Use BREED web to flash Openwrt Firmware(bin) onto R4AGv2 router?

1. Connect Ethernet Cable to LAN port rather than WAN port.
2. Hold & press reset, power on
3. Open browser, go to 192.168.1.1 for Breed Web Page
4. Flash these two bin files together at the same time! 
    - eeprom.bin
    - openwrt-ramips-mt7621-xiaomi_mi-router-4a-gigabit-v2-squashfs-sysupgrade.bin

1. Connect Ethernet Cable to LAN port rather than WAN port
2. PLEASE NOTE: router IP might be changed to 192.168.31.1
3. Default wifi SSID: WiFi_R4AGv2, Defulat wifi Key: password
4. If Router doesn't have DHCP enabled, you will need to manually assign IP to talk to your router:
For example:
    If router's IP is 192.168.N.2
    Manually assign your computer's ip to be: 
    192.168.N.88
    255.255.255.0

How to Fix Breed Endless reboot (infinite bootloop)

Breed doesn't officially support R4A that might cause endless reboot to 192.168.1.1

Telnet to Breed

Chinese users can refer https://www.right.com.cn/forum/forum.php?mod=viewthread&tid=8298740&page=1&extra=#pid18865861
Hold & press reset, power on, boot into Breed, then open cmd or terminal to telnet breed,
Use command: telnet 192.168.1.1,
Setup your local webserver, if your local machine address is 192.168.1.2 port:8080, place the sysupgrade bin at local webserver folder,
Use command to copy bin over to router: wget http://192.168.1.2:8080/sysupgrade.bin
Check and Verify the bin file size, Length: 10749035/0xA4046b (10MB), Saving to address 0x80001000
You MUST erase Enough Space for the bin file size from 0x180000 to 0xA80000.,Why 0xA80000? Big enought for 0xA4046b. Check yours!
0x180000 is set as the address where xiaomi would boot from in this case,
Use command: flash erase 0x180000 0xA80000
Use Command：flash write 0x180000 0x80001000 0xA80000
(Write from 0x180000 address, use data previously wget(saved) at 0x80001000, given writing space with size of 0xA80000)
Use Command：boot flash 0x180000 (Boot from 0x180000)

Next Restart to breed Web interface

You need to enable environment configuration:
Restart again to breed Web interface,then you can add autoboot.command，and value: boot flash 0x180000
This is to tell breed boot system from 0x180000.

kuops/Action_OpenWrt_Xiaomi_R4AGv2