Lest anyone here suffer a near heart attack, as I just did (I'm Old!), I attempted the firmware update today and found the very last-posted (Sony Germany?) instructions to be Not Precisely Correct at least not for my own USA-market VPL-VW385ES experience. I've stricken the verbiage I have problems with:
1. Power off the projector.
2. Make sure no other USB device is connected to the projector before starting the update.
3. Insert the USB storage device containing the update folder into USB port of the projector.
4. Power on the projector. Update process starts automatically.
Note: The ON/STANDBY indicator will blink green and then amber during the update process. The update process takes about 5 minutes to complete.
5. Once the update is complete, the ON/STANDBY indicator will lights up red, and the projector will enter Standby Mode.
6. Remove the USB device.
7. Power on the projector.
8. Once the projector completely starts and the lamp is lit, the update process is complete.
First, after inserting the USB stick and powering On (with the onboard power button on the housing) it appears the LED blinked Green just once, and then it blinked Off and On in Amber. I expected alternating colors, and a comma after "blink green" above would have helped me.
Next, when the Amber LED blinking stopped, it had only been maybe three minutes that the LED returned to Red, but I dutifully pulled the USB stick whereupon THE AMBER LED STARTED BLINKING AGAIN!? This is where I was panicking, thinking I'd prematurely pulled the USB stick and ruined the update process. Bricked projector anyone? What to do, what to do...well nothing To Do except to wait, and hope.
But after blinking Amber for some minutes, the projector made a click sound and the LED returned to Red, after which I was able to power it on and observe the v7.004 in Info. Whew...relief.
I will speculate that the initial blinking Amber LED was Reading the USB stick, and so the time might vary according to the Read Speed off the USB flash memory, which could account for the "about 5 minutes" guesstimate. But that the PJ by itself starts blinking again upon removal of the USB stick, no doubt to Write the captured data to the pj, well this second period of blinking is not mentioned in the instructions...!
For anyone who hasn't done this yet, and I only did it because I got an Apple TV 4K, here's how I would fix the instructions, noting there is only one USB port on our Sony:
1. Begin with projector Off and ON/Standby LED is Red.
2. Insert the USB stick into USB port of the projector.
3. Power on the projector.
4. Observe that the ON/STANDBY LED blinks Green once, and then it blinks Amber for less than 5 minutes.
5. When the ON/STANDBY indicator returns to Red, Remove the USB device.
6. After a few moments the ON/STANDBY indicator resumes Amber blinking for a few more minutes.
NOTE: freshmanjs (next post) said ON/STANDBY flashes amber-red a couple times before the amber blinking resumes. I believe him cuz I'd stopped looking at it momentarily.
7. When the LED stops flashing amber and returns to solid Red (the power supply makes an obvious Click sound), you can power the projector back On again.
8. Once the projector starts and the lamp is lit, check the Info menu item and observe the new Software Version.
That's it. My heart is still beating unnaturally!