Hello,
Here is the solution:
Please download this new software and install it: SwissTransfer.com - Envoi sécurisé et gratuit de gros fichiers
Steps for local upgrade:
- Less than 32G USB driver formatted as FAT32.
- Copy FW to root folder of USB driver
- Insert USB driver to projector, till projector identify USB driver inserted, plug out power cable (USB stick is still inserted).
- Wait a little bit, then plug-in power cable, the projector will upload and upgrade automatically (do not press any button nor the power button).
- Remove USB driver when upgrade finished.