MT7621 bricked


#1

Hello,

I've this Wavlink AC3000 device ( https://wavlink.com/en_us/product/WL-WN533A8.html ) which is the same as this: Win-star AC3000 ( http://www.win-star.com/eshop/goods.php?id=232 ). The "official" model would be WS-WN536A8.

Well, it is a MT7621 device with MT7615 WiFi chips. I know MT7615 are not open source some I don't care about the WiFI right now (even though they are still plugged in on the device).

So, I've compiled an OpenWrt build for MT7621 with very basic packages so I could just boot it. However, I couldn't boot it and I don't know how to debug it.

I've flash this firmware using tftp, which after some work, I got it to upload it to the hardware. But now I'm stuck. Any light and help is appreciated.

Thanks


#2

This may require disassembling the flash and burning the firmware using the burner.
To say something off-topic, even if you just use the mt7621 device as a wired router, its experience is quite bad. Usually you can't use dhcp to get ip or encounter compatibility problems between Gigabit switch chip and client Gigabit LAN.:roll_eyes:


#3

Try boot one of the other openwrt files from TFTP that match the memory size of your device

ie
openwrt-18.06.1-ramips-mt7621-youhua_wr1200js-initramfs-kernel.bin

it you had a backup of the original mtd partitions you could then restore them


#4

Thanks for your replies.

The manufacturer sent the original firmware and I could bring the device back to life.

I will test flashing an image that fits the memory. Thanks for the suggestion.


#5

who is the manufacturer ? download link?


#6

Device: Wavlink AC3000 device which is the same as this: Win-star AC3000. The "official" model would be WS-WN536A8.