Sony A6400 – Camera not recognized by firmware updater

[Sony6400jay]

Hi everyone,

I just bought a brand-new Sony A6400 today. The camera has firmware version 1.00 for the body and the kit lens version 2. I followed all the update steps correctly:

• Removed the SD card
• Downloaded the correct firmware from Sony’s website
• Set the USB connection mode to Mass Storage

My PC recognizes the camera — it shows up in File Explorer, and the camera display also confirms that it’s connected. However, when I launch the Sony firmware updater, it keeps saying the camera cannot be detected.

I found another post here from someone with the Sony A7III who had the exact same issue, and it turned out he actually had the A7III A-version, so the updater didn’t match his camera.

But as far as I know, there’s only one version of the firmware for the A6400, right? Or am I missing something here?

Thanks in advance for any help or clarification!

[Pieter]

Where did you buy the camera? Not sure if there are localized versions for the firmware, but might be that if you bought one from a grey market shop, it might not be recognized by your localized firmware updater.

[Sony6400jay]

1 minute ago, Pieter said:

Where did you buy the camera? Not sure if there are localized versions for the firmware, but might be that if you bought one from a grey market shop, it might not be recognized by your localized firmware updater.

Bol.com🤣

[Cameratose]

23 hours ago, Pieter said:

Where did you buy the camera? Not sure if there are localized versions for the firmware, but might be that if you bought one from a grey market shop, it might not be recognized by your localized firmware updater.

I bought my A1 grey market from Panamoz. No problems with firmware in the US. 

[Cameratose]

On 10/24/2025 at 3:39 PM, Sony6400jay said:

Hi everyone,

I just bought a brand-new Sony A6400 today. The camera has firmware version 1.00 for the body and the kit lens version 2. I followed all the update steps correctly:

• Removed the SD card
• Downloaded the correct firmware from Sony’s website
• Set the USB connection mode to Mass Storage

My PC recognizes the camera — it shows up in File Explorer, and the camera display also confirms that it’s connected. However, when I launch the Sony firmware updater, it keeps saying the camera cannot be detected.

I found another post here from someone with the Sony A7III who had the exact same issue, and it turned out he actually had the A7III A-version, so the updater didn’t match his camera.

But as far as I know, there’s only one version of the firmware for the A6400, right? Or am I missing something here?

Thanks in advance for any help or clarification!

I assume you've read through all of this, but in case not:

ILCE-6400 System Software (Firmware) Update Ver. 2.00 (Windows) | Sony USA

When someone is experiencing trouble updating firmware it's usually some small niggly little thing that they missed in the translation. We seem to focus on the big stuff. I'd start over and do everything they say.

[Sony6400jay]

I already figured it out. I have the newest model, the A6400A, which is a 2025 version with firmware 1.0 — but that’s actually the latest firmware, equivalent to version 2.0. It includes animal tracking just like the 2.0 update. So it seems to be a mistake on Sony’s side. That’s why my PC recognizes the camera, but the software doesn’t, since the camera is already up to date.