AC900 / Archer C25 - TFTP BOOT

Hardware Questions and Recommendations
1

Hi!

I ruined my device by writting the factory image instead of the upgrade image, so now the system won't boot.

I need to know the memory information I should use to type the commands for restoring it via TFTP.

I did it once before, but on a well documented router (WDR4300).

Does anyone know the correct addresses I should use on this device?

# tftpboot 0x81000000 openwrt.bin
# erase 0x9f020000 +7c0000
# cp.b 0x81000000 0x9f020000 0x7c0000
# reset

The device is an TP-Link AC 900 (the name in the box), model "Archer C25 (EU) version 1.0"
https://openwrt.org/toh/tp-link/tp-link_tp-link_archer_c25_v1

Thanks in advance.

PS.: it's urgent because the climate here at home gets very very violent when people go out of wifi because of me T.T

2

The safest way to do it is to obtain the initramfs build for your model from the trunk distribution, tftp it to RAM then use a bootm to launch OpenWrt directly from RAM. Use that OpenWrt to flash a sysupgrade (which can be a "downgrade" to a distribution build). This way you don't need to watch the flash addresses. It's easy to make a fatal mistake when erasing or writing flash directly from the bootloader.