AX3000T bicked but no comm on UART

Installing and Using OpenWrt
1

Hello,

I have an RD03 with old 0.47. I flash it without problem and good WIFI router, but after wireguard conf, the router crach and don't reboot.
No PB, I flash firmware 0.47 with tftp, use xmir for ssh and new firmware...
but no reboot on openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-initramfs-factory.ubi.

  1. Now, I can't have tftp with on + reset button. I have orange LED: fixed, rapid blink, slow blink and blue LED. I don't release the reset button :frowning:
  2. ok, I want try UART connection, but no outtput. (with CH340 USB TTL on linux, or Windows, and with raspberry idem, but work with an esp32)

Why UART don't work?

Thanks for your help :wink:

2

hello,

I change my USB to TTL, it is better and work like my raspberry.
BUT no transmit with the UART.

I try with my new ax3000t RD03 but firmware 1.0.84, and I have good output:
~$ cu -l /dev/ttyUSB0 -s 115200
Connected.
����� ������� �����Z�t� ���A�����^� � ����
F0: 102B 0000
FA: 1040 0000
FA: 1040 0000 [0200]
F9: 0000 0000
V0: 0000 0000 [0001]
00: 0000 0000
BP: 2400 0041 [0000]
G0: 1190 0000
EC: 0000 0000 [1000]
T0: 0000 024B [010F]
Jump to BL

I try too with mtk_uartboot (why not...), but
$ ./mtk_uartboot -s /dev/ttyUSB0 --aarch64 -p openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-preloader.bin -f openwrt-mediatek-filogic-xiaomi_mi-router-ax3000t-ubootmod-bl31-uboot.fip
mtk_uartboot - 0.1.1
Using serial port: /dev/ttyUSB0
Handshake...

and no other line.

Why UART can't work?
it is bootloader problem or hardware and no solution :frowning:

thanks