Netgear R6700v2 turn to R6800 after reinstalling stock firmware.

[Kopi1984]

Hi there,
I tried the SWRT for R6700v2 , time later I reinstalled stock firmware of R6700v2 but the router likely brick:

• The GUI web show that this router is R6800 (actually it's R6700v2)
• The wifi could not be enable (I tried pushing the wifi button to enable many times, wifi feature in web GUI is disable (the whole pafe turn grey).
• The serial No changed to 1234567890.
  The reason may because of R6800 was the one you use to customize the firmware.
  I don't expect much help from you, but if there're anyway restore my Netgear R6700v2, pls help.
  Thank you much.
  Kopi.