I've done something very strange. There was a problem updating firmware to Tplink tl-wr1043nd v1 device. Despite my best efforts, it didn't improve. I wanted to update with the Tftp app. But I couldn't because I cut the road off with the soldering machine. As a last resort (the same model), I removed the Bios chip of different router devices and took backup. And I uploaded this bios file to the device that isn't working. There was a problem when I said it was all good and everything was working.
Now I have two devices with the same MAC address. They're on the same network, so they're conflicting with each other. only one of the two can only be used on the network...
My question is... How do I change the address "MAC"? I'm open to any suggestions.
I don't know for the tl-wr1043nd, but for c7 v2, wdr4900v2, the mac address is stored at the end of u-boot, at 0x1fc00, you can check it with hexdump of u-boot partition.
Then cat your u-boot and modify the corresponding location and write back the u-boot.