openwrt/target/linux/ramips/image
Dmitry Sokolov 39e4f03fd3 ramips: mt7621: add support for Xiaomi Mi Router 4A Gigabit v2
Device is the same as Xiaomi Mi Router 4A Gigabit, except of:
- 5G WiFi is MT7663
- addresses of leds, wifi and eth ports are slightly changed

Specs:
  SoC:  MT7621
  CPU:  2 x 880 MHz
  ROM:  16 MB
  RAM:  128 MB
  WLAN: MT7603, MT7663

MAC addresses:
  WAN     ****  factory 0xe006 (label)
  LAN     *:f7  factory 0xe000
  2.4 GHz *:f8  factory 0x0000+0x4 (mtd-eeprom+0x4)
  5 GHz   *:f9  factory 0x8000+0x4 (mtd-eeprom+0x4)

Installation:

Factory firmware is based on a custom OpenWrt 17.x.
Installation is the same as for Xiaomi Mi Router 4A Gigabit.

Probably the easiest way to install is to use the script from
this repository: https://github.com/acecilia/OpenWRTInvasion/pull/155

In a more advanced case, you can do everything yourself:
- gain access to the device through one of the exploits described
  in the link above
- upload sysupgrade image to /tmp
- overwrite stock firmware:
  # mtd -e OS1 -r write /tmp/sysupgrade.bin OS1

Recovery:

Recovery procedure is the same as for Xiaomi Mi Router 4A Gigabit.
Possible options can be found here:
https://openwrt.org/inbox/toh/xiaomi/xiaomi_mi_router_4a_gigabit_edition

One of the ways is to use another router with OpenWrt:
- connect both routers by their LAN ports
- download stock firmware from [1]
- place it inside /tmp/test.bin on the main router
- configure PXE/TFTP on the main router
- power off 4Av2, hold Reset button, power on
- as soon as image download via TFTP starts, Reset can be released
- blinking blue wan LED will indicate the end of the flashing process,
  now router can be rebooted
[1] http://cdn.cnbj1.fds.api.mi-img.com/xiaoqiang/rom/r4av2/miwifi_r4av2_firmware_release_2.30.28.bin

Signed-off-by: Dmitry Sokolov <e323w@proton.me>
2023-01-28 22:11:44 +01:00
..
lzma-loader ramips: lzma-loader: make FLASH_START configurable 2020-09-03 14:15:30 +02:00
common-sercomm.mk ramips: add support for Etisalat S3 2022-12-13 23:06:20 +01:00
common-tp-link.mk ramips: add basic support for TP-Link EC330-G5u v1 2023-01-14 18:36:33 +01:00
Makefile ramips: define lzma-loader recipe for SEAMA devices 2022-11-12 18:15:55 +01:00
mt76x8.mk ramips: improve support for Zyxel Keenetic Extra II 2023-01-28 21:45:34 +01:00
mt7620.mk ramips: add support for SNR-CPE-W4N-MT router 2022-12-17 22:34:44 +01:00
mt7621.mk ramips: mt7621: add support for Xiaomi Mi Router 4A Gigabit v2 2023-01-28 22:11:44 +01:00
rt288x.mk treewide: uniform vendor name for ASUS 2022-11-16 23:30:11 +01:00
rt305x.mk treewide: uniform vendor name for ASUS 2022-11-16 23:30:11 +01:00
rt3883.mk treewide: uniform vendor name for ASUS 2022-11-16 23:30:11 +01:00