I updated my USB dock firmware to "1.2.0" and still find it to be useless a product. Each time I connect my 35A to it, I'm told there is a firmware update for the lens (1.02 I believe) so, I update the firmware and disconnect the lens. If I reconnect the lens I'm told again about the same update. If I don't disconnect the lens I'm able to adjust the focus settings, but as soon as I disconnect the lens and reconnect I'm again told about the same firmware update. If, while the lens is still connected I hit "later" to the firmware update the "customize" button is greyed out and I can't make changes. I thought at first the issue lay with my laptop, so I used a different computer - same problem. Perhaps the issue is with the lens BUT - months ago, and after several cycles of this nonsense, I was actually able to set the focus adjustments and use the lens. If I reconnected it to the dock, I wasn't prompted to update the firmware and the focus settings I changed stayed. I figured I was out of the water. I was wrong. After a few weeks, I reconnected the lens and was again prompted to update the firmware. Rinse and repeat. I've had to write down the settings I made so I don't have to attain them every time this problem occurs.
Updating the dock firmware and connecting the lens just now, I'm once again prompted to upgrade its firmware. Perhaps the lens "forgets" its firmware after a few hours. Who knows. While I am looking forward to the 50A and I do love my 35A I'm very disappointed with this dock product, it's a stinker.
Hi. Just signed up to share my experience with the dock.
I have the dock and the 35mm Art too. My lens firmware was 1.01, my Sigma Optimization Pro software was 1.2, and I was also getting the notification about a new firmware for the lens (1.02) when I already tried to update it. The problem was the lens wasn't really updated to 1.02 or the software doesn't know. Every time the lens gets reconnected, you might notice that in the lens info, it'll still be 1.01.
This is what I did:
1. Open Sigma Optimization Pro
2. Attach the Sigma 35mm Art lens
3. Wait for the popup saying there's a new firmware (or check firmware)
4. Update and wait
5. Once the update is complete, a popup will show saying the lens is updated and you can remove the lens, DO NOT CLICK "Close"
6. Remove the lens itself from the dock (not the USB cable)
7. Re-attach the lens and it should be updated now
I hope this will work for you!
The tweaks I can do through the dock really works and I'm glad Sigma provides us with this capability. Some will say that lenses should work out of the box without MFA or stuff but I beg to differ. I've been a Nikon user for a number of years and I only used high-end Nikkors. Even then, I had to do MFA in body and some lenses needed different values at different focus distances. In our country, Nikon's service is basically crap (it would take a month even just for sensor cleaning) so I lived with it. It was with the Nikon D800 that I first bought a Sigma lens (the 35mm Art) and I super loved it as it was super sharp and pretty accurate except at really far distances where it does front-focus. I converted to Canon and I knew which 35mm I wanted and also got the dock. It's kinda fun for a DIY guy like me to tinker around and experiment with the lens. One thing I wish though is for Sigma to make the 4 focus distance ranges to be user-specified or at least more varied.
Excellent, thanks for sharing, hopefully that does the trick for people struggling to update. And I have placed a preorder for the 50 and will buy the dock also.