how to go into the core board bootloader

[2008jiayu]

I just update the LC1860 model using wrong firmware asisstant 2 beta, my drone cannt connect the computer now,how to recover it ,how can i go into the bootloader .😂

there are two usb ports ,the one is com port , the other is usb lan but it say the Cable not inserted

[droner69]

The only current option I know of is to replace it, Thunderdrones may have one cheaper than ebay.

[mingtaoxin]

@2008jiayu i have same problem ... how do you make update procedure ?