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BUFFALO WSR-3000AX4P is a 2.4/5 GHz band 11ax (Wi-Fi 6) router, based on
MT7981B.
Specification:
- SoC : MediaTek MT7981B
- RAM : DDR4 512 MiB (ESMT M16U4G16256A-KJBG)
- Flash : SPI-NAND 128 MiB (Winbond W25N01GVZEIG)
- WLAN : 2.4/5 GHz 2T2R (MediaTek MT7981B (SoC))
- Ethernet : 4x 10/100/1000 Mbps
- switch : MediaTek MT7531A
- LEDs/Keys (GPIO): 6x/4x
- UART : through-hole on PCB (J1)
- assignment : 3.3V, GND, TX, RX from tri-angle marking
- settings : 115200n8
- Power : 12 VDC, 1.5 A (Max. 14.4 W)
Flash instruction using initramfs image:
1. Prepare a TFTP server with 192.168.11.2
2. Rename initramfs image to "linux.ubi-recovery" and put it to the TFTP
directory
3. Hold the "AOSS" button and power on WSR-3000AX4P, release after 7~
seconds
4. The bootloader automatically downloads the initramfs image and boots
with it
5. After booting, upload a sysupgrade image to the device and perform
sysupgrade with it
6. Wait ~100 seconds to complete flashing
Reverting to stock image:
1. Download a official firmware and decrypt it by buffalo-enc
example:
buffalo-enc -i <official .bin> -o fw.dec -d -O 0xC8 -l
2. Upload the decrypted image to the device
3. Flash the image to the UBI in "ubi_kernel" partition on the device
example:
. /lib/upgrade/common.sh
. /lib/upgrade/nand.sh
CI_UBIPART="ubi_kernel" nand_do_flash_file fw.dec
4. Reboot the device
reboot
Notes:
- WSR-3000AX4P has 2x OS images ("ubi"/"Kernel2"), but the second one
is only for backup and not used for booting.
image handling on the bootloader:
- "ubi" is broken : "Kernel2" --(copy)--> "ubi"
- "Kernel2" is broken : "ubi" --(copy)--> "Kernel2"
- "ubi" != "Kernel2" :
- boot_select=0: "ubi" --(copy)--> "Kernel2"
- boot_select=1: "Kernel2" --(copy)--> "ubi", set boot_select to '0'
MAC Addresses:
LAN : EC:5A:31:xx:xx:50 (board_data, "mac" (text))
WAN : EC:5A:31:xx:xx:50
2.4GHz: EC:5A:31:xx:xx:52
5GHz : EC:5A:31:xx:xx:59
Signed-off-by: INAGAKI Hiroshi <musashino.open@gmail.com>
Link: https://github.com/openwrt/openwrt/pull/22587
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>