tplink

reset default tp-link tl-mr3420 v1

https://www.tp-link.com/en/download/TL-MR3420_V1.html
https://openwrt.org/toh/tp-link/tl-mr3420

pakai tftp server
usb ttl


setenv ipaddr 192.168.1.1
setenv serverip 192.168.1.27
tftpboot 0x80000000 tplink.bin
erase 0x9f020000 +0x3c0000
cp.b 0x80000000 0x9f020000 0x3c0000
bootm 9f020000