Hi there.
Trying to get my wndrmacv2 up, but had an issue.

[    0.242000] VFS: Cannot open root device "(null)" or unknown-block(0,0): error -6
[    0.250000] Please append a correct "root=" boot option; here are the available partitions:
[    0.258000] Kernel panic - not syncing: VFS: Unable to mount root fs on unknown-block(0,0)

after that i've managed to erase entire flash with this:

erase 0xbf020000 +0x7c0000

the erase command is from openwrt wiki: generic.flashing.serial

and evetualy i've power off the router...
for now there is no leds, and no data on serial.
how should i debrick the device?
thank you in advance.