I have TP-Link Archer C9 HW ver 5.0.
In openwrt there is no support for this HW revision, but there is support for HW ver 1.0
The differecnce is not so big.
But firmware WEB interface upgrade tells that wrong file type.
TFTP doesn't works too.
But I have UART console root access.
So, I made backup from all /proc/mtd
And now try:
mtd write /tmp/openwrt-18.06.0-bcm53xx-tplink-archer-c9-v1-squashfs.bin rootfs
Could not open mtd device: rootfs Can't open device for writing!
mtd unlock /dev/mtd3
Could not open mtd device: /dev/mtd3 Could not open mtd device: /dev/mtd3
Please, help me to install OpenWRT on this device.
As I understand, it should works but witout WiFi or LAN drivers - it will be my next issue.
P.S. Also have acces to CFE loader. May be install through CFE bootloader?