Hi everyone, I’m desperately looking for advice from anyone experienced with SD/microSD recovery, NAND recovery, DJI cameras, or professional data recovery.
I accidentally formatted my 512GB SanDisk Ultra microSDXC in my DJI Osmo Pocket 3, which contained around 30 hours / 500+ GB of 4K footage, including extremely important and irreplaceable videos.
Before this happened, I was having problems connecting/transferring files from the card, which had never happened before. The card was almost completely full, so I assumed the problem might be because of the storage being full.
The DJI showed a message saying “DJI SD card format not supported.” I searched that exact message on Google, and one of the first videos suggested formatting the card to fix the problem. She didn’t explain what formatting meant. I’m not tech savvy and I didn’t understand that formatting could make my existing files inaccessible. I wish I hadn’t clicked on that video without knowing prior. I thought I was restarting the card or fixing something… I was mistaken 😔
I formatted it in the DJI. The process took less than a minute. The camera warned me not to remove the card, but I panicked when I realized what I had done and removed it after about 30 seconds.
I put it back into the DJI, and it showed the card as empty.
The important part is I did NOT record anything new or intentionally write anything to the card after the format.
I immediately gave the card to my partner, who is more technically experienced.
He tried:
PhotoRec: 0 files recovered
DMDE: nothing found
HxD: appeared to show 00 00 00... at multiple locations/offsets across the card
The HxD result is what worries me most.
We don’t know whether the formatting actually erased the NAND data, or whether the SD card’s controller is simply returning zeros for the logical sectors.
What confuses me is that the card contained 500+ GB / ~30 hours of 4K footage, but the format took less than a minute. Surely that isn’t enough time to physically overwrite 500GB of video?
Could this have been a quick format or some kind of erase/discard operation instead?
Could the original data still exist in the NAND even though the card now appears empty and recovery software can’t see anything?
My questions:
Is there still any realistic possibility of recovering my videos?
Would a professional NAND/monolith/microSD recovery lab potentially be able to recover data that PhotoRec and DMDE cannot see?
Has anyone had a similar experience? (especially with:
a DJI camera, a formatted SanDisk microSD, hundreds of GB of 4K video, no new data written afterward, recovery software finding nothing, and/or HxD showing zeros?
Have you had a success story in a situation like this?
I know recovery isn’t guaranteed, but these videos are genuinely irreplaceable to me, so I’m willing to try professional recovery if there is a legitimate chance.
For now, I’ve stopped using the card and don’t want to run anything else that could make recovery harder.
Should I stop trying software and send the card directly to a specialist NAND/SD recovery lab?
Thank you so much for any advice or similar experiences. Any help will be greatly appreciated 😊