Download 1024x768 3663lu 81a Bin May 2026

until the light stops flashing, indicating the update is complete.

Power on the board. The indicator light should begin flashing (usually red/blue). Download 1024x768 3663LU 81A bin

: Copy the firmware file, typically named 3663LU_81A.bin , to the root directory of the USB drive. until the light stops flashing, indicating the update

: DS.D3663LUA.A81.PA, ZS.3663LSA.A01, or MS3663.81A. until the light stops flashing