Adding OpenWrt support for Xiaomi AX3600 (Part 1)

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I have an AX6 auto-bricked with uart off on the shelf waiting for a recovery method for a few months ago...

I have seen a interesting method with xiaomi AX6S (MediaTek) for get u-boot with UART enabled interrupting tftp recovery process a few days ago. I know it is other soc but I would try it. Since AX3600 firmwares do not have u-boot partition whitin I think the risk for get things worse is low...

Anyway this is just an idea I am not sure at all and if someone thinks that this is dangerous or anything, please tell me soon. (* I can not try this in my AX6 because it does not even start tftp recovery proccess.)

*Do not use openwrt images or anything else of AX6S thread, it is only about the tftp recovery proccess interruption.

Adding OpenWrt support for Xiaomi "Redmi Router AX6S"/"Xiaomi Router AX3200"

I got a unit with disabled telnet and UART. But it was possible for me to start the TFTP recovery process and interrupt it after loading the image when it starts erasing the flash by just pulling the power cord. After power on it is not able to load anything and falls back into UBoot with a working UART terminal that can be used not only for enabling telnet and SSH, but also for loading an OpenWRT image and starting it.

Adding OpenWrt support for Xiaomi "Redmi Router AX6S"/"Xiaomi Router AX3200"

As I have written some posts before. Setup a TFTP Server for recovery, using one of the RB01 images, e.g. 1.0.71_INT. Connect to UART, 115200 Baud Start recovery/debrick procedure As soon as erasing starts, unplug the power cable Plug in power cable again, you should end up on a UBoot terminal Enable UART, Telnet, SSH, just to be sure. setenv uart_en=1; setenv telnet_en=1; setenv ssh_en=1 Place image on TFTP server (Not sure, but I think I used openwrt-mediatek-mt7622-xiaomi_redmi-router-ax6s-…