this is what you are looking for found it on neighbor forum:
this .bin file is for mir3g v2 firmware version (2.28.8)
but i'm not sure if it is possible to flash it.
also maybe you need this usefull tool (R3GV2+PATCHES for windows x64)
https://dl4.shatelland.com/files/9b34a7c2-28ee-44de-90cb-3f96b6de4a06/59ec11ac-ad89-4a45-b3c5-43ec9d875432
I think you need above tool for flashing it.
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also here is firmware ver 2.28.132 with english UI for mi router 4a gigabit :
above image is tested by me on 4a gigabit edition and it worked !!
instruction
- before running any configuration scripts==>you need to access the router,to do this,run 0.start_main.bat and enter the password of your router wait for the script to execute. the answer should be like this :
start uploading config file ...
run telnet+ ftpd...
Done
press any key to continue...
the result of the script will be running telnet and ftp servers on the router until it reboots.
2)0.start_read_uboot.bat and 0.start_open_uboot.bat:
shows you the status of the bootdelay and uart_en variables.
0.start_open_uboot.bat==>it changes bootdelay=5 and uart_en=1
this allow you to use the bootloader and using the console in the stock firmware.
and help you to restore the router without a programmer if the OS did not boot
- 1.start_create_backup.bat - just creates a full backup of the current firmware. As a result of the work, the backup.bin file should appear in the data directory..
4)2.start_write_uboot_R4AGE.bat - THE MOST DANGEROUS SCRIPT to run it is necessary only for the owners of R3Gv2 . Owners of R4GE do not need to do this, you have it exactly the same, and the Chinese have firmware for recovery only for R4AGE. Unlike other flashing scripts, this one does not restart the router automatically.
Replacing the bootloader allows you to restore the router even if there was a jamb in the main firmware, as happened when switching to the 5.4 kernel from openwrt.
The process takes about 7 minutes. the router does not automatically restart, a sign of the end will be change of the yellow LED to blue.
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4.start_add_english.bat - the script turns the Chinese UI into English.(Tested on mi4a gigabit on firmware 2.28.62 and it worked)
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5.start_write_OS1.bat - a script for changing the main firmware (the bootloader and special zones are not overwritten). The script takes the sysupgrade.bin file in the data directory and flashes it into the router. After the flash, the router will reboot.