Previously, I try to flash out LEDE to my TP-Link Archer C5 AC1200 but it seems fail even I used TFTP method.

After do some googling and research to on LEDE firmware and original firmware, I found out that there is “special_id:” inside both firmware.

On the left was LEDE Firmware and on the right was original Firmware from TP-Link Website (it seems the firmware based on region)

I quickly edit my special_id on my LEDE and flash out my router using TFTP method and got it running successfully.