Hello, i am new to here. I register coz want to ask.
I'm not techincal people and i'm afraid ti flash the Mi Wifi, but i really want to.
Is there no caution/precaution steps while flashing the Mi Wifi??

And after I flash the router, can i connect 3g/4g usb dongle into it usb port??
Now i have usb 3g dongle but when i put it inside the usb port, it will never connect to internet. So i put the modem into my TP link router, connect the internet and using Mi Wifi as repeater. But my Tp link is old and the connection is not so stable. So i want to flash the Mi Wifi. But if the MI Wifi doesn't support 3g usb dongle, i don't want to flash it.

#Sorry for my bad english

I have try to flash it. But the ssh fail. Hoe to fix???? I don't understand the tutorial and i also can't change to english to the script... I contact the member in MiUi forum but also don't understand. When i press 0 to hack ssh, nothing happen. It just go back to home script. help help help. Sit in front of my laptop from yesterday untill now and fail 😭😭😭😭

If i follow your link, can i flash back from earlier?
Now it appear error code on the script . It said like @Prometheus 64:~$ . And it said maybe "will damage router please flash factory firmware to the router."

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I found out one member of Miui forum also has the same problem with me.
He ask in the forum but no one reply to him.
The i think i should try to flash factory firmware on this router.
So sad that i can't flash my Xiaomi Router 3.
Going to buy another router TP link 3420 that support 3g/4g because tp-link mr3420 that i own now just support 3/3.75.
Thanks for help .