Laptop will not read files on the SD card

Can you describe your issue?

Hi, did u solve this problem? because I'm facing same issue, I need to recover the videos ASAP.

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That's the same I got here. Put my 128GB card in my spare K2 ten hours ago and have no problem in reading the SD Card (and the 10 hour videos of recording my desk).

Before firing up some data recovery software at the card, you can try to install a Linux in a virtual Machine (e.g Oracle Virtual Box) and check if it can read the card. Often enough I found that Windows is bitchy when it is about memory cards.

Bit of an update ... I tried a SanDisk 128 gig card ... went on a 6 hour ride yesterday ... seems my laptop recognizes the files and will read that card just fine. I have successfully downloaded the files to my laptop and they play fine. So, maybe the K2 is just not working with 256gig cards, perhaps there is a firmware update planned that will address the issue? For the time being, I will just use the smaller card (128g) however, that does't address the fact that I have several hours of video on the 256g card that I want (two great trips) ... I am attempting to use data recovery software to see if I can recover these ... if not I guess I'm just out of luck. BTW, the 6 hrs of video used about 50% of the card capacity.

...now that I have a few rides on it again can not retrieve video

That's interesting. How much GB (or Videos) are on the card now? I filled my 128GB Card some month ago and had no problem reading it. But that was before V52 and the new EXFAT format. The max amount of data I recorded with the K2 on EXFAT is something around 60GB.

So the K2 still can read the videos and transfer them by wifi, but the card is inaccessible on your laptop, if there are some hours of video on it. Correct?

That could mean, that the K2 does not follow the EXFAT specifications in all cases. I will do some tests with my 128GB card to see if I can reproduce it.

I did format the card via app yes.

I have tried 3 different card readers, all give the same message.

I should also note that my computer reads other random SD cards I own just fine via any of the adapters I have so it's not my laptop or the adapters.

The Sandisk card was working fine when first inserted, seems only after getting 10+ hours of vid on it that it seems to have started to malfunction.

Of note ... when I bought the K2 I also bought a new Samsung 256g U3 A2 card (this is a different card than the one I am using now) that initially worked just fine, then after a couple of rides I could not retrieve the video via computer or the app ... I assumed a faulty card and returned it to Amazon ... I then bought this new second Sandisk 256g card ... now that I have a few rides on it again can not retrieve video, the only difference between this Sandisk card and the old Samsung card is at least that app will read the Sandisk card, where with the Samsung card the app would not read it at all.

I am starting to think that the K2 is somehow corrupting cards when they start to get a load of files on them ... yes I will try another third card, this time a 128g card.

Somehow these cards are either getting corrupted in the K2 or I have had the unlikely unfortunate luck to get two faulty cards ... however, as stated both cards were working just fine when I inserted them, both readable on my computer and the app, then once they get a significant amount of files on them they stop being readable ... so I have to believe something is happening to them in the K2 ...

Have you formatted SD via App card before recording?

Do you have other SD card to try? just like 32GB.

Windows 10 on the laptop. I also get the same set of error messages when I connect to the dvr with the usb cord ...

What operating system are you using?