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A1 II Firmware v4.0

  
 
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p.1 #1 · A1 II Firmware v4.0


Just uploaded

https://www.sony.com/electronics/support/e-mount-body-ilce-1-series/ilce-1m2/software/00349486









Oct 30, 2025 at 12:15 AM
stalderm
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p.1 #2 · A1 II Firmware v4.0


Here are more information about the AF+:




Oct 30, 2025 at 01:01 AM
stalderm
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p.1 #3 · A1 II Firmware v4.0


I updated both my A1M2 and A9M3 and at a first glace everything is fine. My menu and Fn menu have been retained.


Oct 30, 2025 at 01:20 AM
j4nu
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p.1 #4 · A1 II Firmware v4.0


Interesting!
I wounder if it also improves (static) bird detection, so that it finally matches Canon...



Oct 30, 2025 at 02:40 AM
Alex W
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p.1 #5 · A1 II Firmware v4.0


Updated using the Creative App with no issues. Will get out today and do some testing.


Oct 30, 2025 at 07:35 AM
arbitrage
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p.1 #6 · A1 II Firmware v4.0


j4nu wrote:
Interesting!
I wounder if it also improves (static) bird detection, so that it finally matches Canon...


One could only hope. All we know is it is must have for Japanese woman's handball shooting.



Oct 30, 2025 at 07:37 AM
arbitrage
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p.1 #7 · A1 II Firmware v4.0


Seems like they fixed the battery drain/display issue.
Seems like they've given lenses like 100-400 and 200-600 the ability to use the preset focus distance/recall.

The fact that they have specifically talked about new AF (which they rarely do) means this could be a big overhaul. I will install by tomorrow if no bug reports come out.



Oct 30, 2025 at 07:39 AM
Douglas L
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p.1 #8 · A1 II Firmware v4.0


I was being very brave, just updated mine. I won't have any fast things to shoot for another 2 weeks though.


Oct 30, 2025 at 07:40 AM
jhapeman
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p.1 #9 · A1 II Firmware v4.0


j4nu wrote:
Interesting!
I wounder if it also improves (static) bird detection, so that it finally matches Canon...


The written web page implies its for people. But it does give one hope that they are continuing to invest in updating AF algorithms and have finally switched gears about adding functionality/improvements in firmware updates vs. just bug fixes.

https://www.sony.co.uk/presscentre/free-software-update-to-enhance-real-time-recognition-af-auto-focus



Oct 30, 2025 at 08:45 AM
Donzo98
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p.1 #10 · A1 II Firmware v4.0


Updated.. no issues.

Takes like 5 min or so... so don't freak



Oct 30, 2025 at 09:17 AM
 


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maestrofilms
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p.1 #11 · A1 II Firmware v4.0


I saw a post on FB from sometime who updated and shoots hummingbirds mostly.
They said the tracking is definitely improved.
Take that with a grain of salt. Just something I read.

arbitrage wrote:
One could only hope. All we know is it is must have for Japanese woman's handball shooting.




Oct 30, 2025 at 12:48 PM
mogul
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p.1 #12 · A1 II Firmware v4.0


Just a quick note. I had trouble updating with an A card. Switched to a type II SD and had no problems (9III)


Oct 30, 2025 at 02:27 PM
johnsigs
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p.1 #13 · A1 II Firmware v4.0


Me too, ended up using the Creative App with no issues


Oct 30, 2025 at 02:41 PM
jhapeman
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p.1 #14 · A1 II Firmware v4.0


mogul wrote:
Just a quick note. I had trouble updating with an A card. Switched to a type II SD and had no problems (9III)


No issues here on either my two A1II's or my A9III. I used both an AngelBird type A and an OWC type A card. What version were you updating from and what card brand were you using?



Oct 30, 2025 at 03:06 PM
mogul
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p.1 #15 · A1 II Firmware v4.0


Prograde 160...it is the root which I tried to connect. The sd didn't show the root and it went right through.


Oct 30, 2025 at 03:17 PM
ftllens
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p.1 #16 · A1 II Firmware v4.0


CFe-A worked great on Slot 1 only on A9iii. Hopefully this fixes the occasional weird battery drain or display glitch thingy.


Oct 30, 2025 at 03:55 PM
Pius Sullivan
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p.1 #17 · A1 II Firmware v4.0


I was shocked how fast the firmware updated, took like 3 minutes. OWC 480GB card.


Oct 30, 2025 at 05:21 PM
71sbeetle
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p.1 #18 · A1 II Firmware v4.0


Updated mine also, quick update and just a quick test in the house it seems good, backlit subject 2 stops underexposed and I get instant eye AF green square on where the eye is. Going to have to really test it soon. I wonder if a similar update is coming to the A7R5 soon


Oct 30, 2025 at 06:50 PM
robert614
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p.1 #19 · A1 II Firmware v4.0


Thx for the heads up!


Oct 30, 2025 at 09:50 PM
speedmaster20d
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p.1 #20 · A1 II Firmware v4.0


I am very interested to evaluate the "tenacious" tracking, it could be useful for situations where my subject (bird) is occluded by foreground vegetation or cliffs. currently you have to let go of AF to avoid latching on to the FG or BG, when the subject reappears it could take a moment to lock back or sometimes it can latch into something entirely different as the "tracking history" is lost.... this could be an improvement in that department


Oct 31, 2025 at 12:41 AM
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