Please download the projector firmware from eSupport and have the customer follow the steps below to update the projector firmware:
STEP 1
Prepare a 32GB USB pen drive with FAT32 disc format.
STEP 2
Put the projector firmware into the USB pen drive.
STEP 3
Connect the USB-C pen drive to the USB-C port on GV1, if the BenQ projector you have is GV1.
Connect the USB-A pen drive to the USB-A port on GS2, if the BenQ projector you have is GS2.
STEP 4
Go to About > System Update > USB Update