He might still be able to install “back home” for use “during holidays”.
This is the bizarre thing though… I definitely have some - like the one’s in the screenshot… and I’ve got the dng files open I’m not using the jpg’s… and it’s not stars as that white pixel is in the same place even thought the images are different…
On another note… I am simply amazed how well it took them considering it was pretty breezy!
Tempting…
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Likewise that strange colouration around the lights is just not there in the RAW or the jpegs we created.
Something adrift at your end. Is there some effect filter installed that’s tinkering?
The are rather amazing pieces of tech. 
Humbug… for a moment I thought it was Apple’s nightshift which I had forgotten to disable (and I think to do it when colour grading but didn’t just now doh!)… and even when I disabled it that damn red dot is still in the corner even though I can clearly see it’s not on the one you sent from Snapped… grrrr…
… or Lightroom.
Good news: If nothing else, at least you know there’s nothing wrong with the Air2s.
Bad news: Of course - that means you still have the problem in your images. 
Hope you get to the bottom of it. Look forward to you finding out the cause of the problem.
Ha he yes your’s also sorry I’d missed that… in my growing frustrating I scrolled up to the first image and stopped scrolling (I’m not getting annoyed honest…)
Now before I forget I’ve decided I’m going to label my batteries and then get them charged… I’m intending heading out to try and get some nice sunrise shots / footage at a local hilltop sculpture called the Halo… at least sunrise isn’t too early tomorrow 
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Only 1 minute earlier than its very latest rise time this Dec/Jan.
Just checked a couple of your pictures and the speckles are hot pixels. These are normal, very common and a lot of software removes them automatically, the only problem is that a lot of software only applies hot pixel removal OR lens distortion correction but not both unless your drones lens is supported in a free toolkit called Lensfun. The DNG files contain a lens profile already but most software ignores it. I’ve checked the latest Lensfun database and it doesn’t appear that the FC3411 lens on the Air 2S is currently listed.
Adobe Lightroom & Photoshop (using the RAW converter) will fix both the hot pixels and the lens distortion as it will read the lens profile from the DNG file.
What makes you think that? Did you check the RAW? Did you read anything of the above, or look at the evidence, that shows that they are not?
Only once ever seen one on my DSLRs/Drones/Phones/Etcs. It reset without issue.
I took some night shots last year and went through the exact same process of “WTF are these coloured splotches on my pictures?!”. I know they’re not dead pixels because they’re not consistent in their placement. I did a lot of searching and research for several days and the consistent answer back was they are hot pixels. Looking at these pics they are the same artefacts I saw and the ISO level being above 100 just reaffirms this for me.
I checked the RAWs using Affinity Photo on the Mac because it has two RAW engines, one fixes hot pixels, the other fixes the lens distortion using the inbuilt lens profile.
Using the engine that fixes lens distortion only: Lots of hot pixels all over the picture.
Using the engine that fixes hot pixels: All splotches are gone.
Loading the same RAWs into Lightroom shows a lovely clean image.
If you think they’re not hot pixels, what do you think they are?
Same - no fixing anything.
As proven above, where DNG is clean and the OP’s jpeg has more than those strange artefacts (the colour edging to lights), I think there’s something iffy about the software he’s converting them from RAW to jpeg.
As you can see above - two of us, using different software, produce totally clean screenshots of the RAW, and totally clean jpegs of the same RAW.
I don’t think I’m following you properly @OzoneVibe 
The RAWs are covered in hot pixels, Lightroom is just fixing it automatically. I could develop DJI_0005.DNG using the Affinity Photo Apple Core Image RAW engine and produce a JPG covered in splotches because the hot pixel removal routine doesn’t run when that engine used. If I swapped over to the Affinity Serif Labs RAW engine I’d get a lovely clean image but with lens distortion and vignetting on it.
If @Datmandan uses Lightroom all his splotches will go away and any lens distortion/vignetting will be fixed automatically. That said, I do have a test DNG which is literally a sea of hot pixels which I use for testing apps, even Lightroom misses a couple of pixels so that’s not to say it’s perfect every time.
Dead pixels will appear in the same pixel(s) … there is no evidence in some of the images in the same location.
I’ve images (RAW) taken as part of a timelapse of the Comet in 2020.
All are processed in Lightroom.
All show the same dead pixel … all 4000 of them.
I said they’re hot pixels, not dead pixels. These are two different things
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Perhaps, as I may also have typed in error, we are muddling “dead” and “hot” pixels?
Hot are those that are worst in long exposures, and can move, agreed.
A dead pixel is just that. One pixel that ain’t doing it’s job.
The suggestion by the OP in the title, and the evidence being in the same location, is of a dead pixel. That is proven to not be the case.
Apologies for introducing any confusion.
ha - agreed - as I was simultaneously typing. 
Ahah, yes, I think we’re both in agreement, definitely not dead pixels! To be honest by the time I’d finished reading and testing the RAWs I’d forgotten that was even mentioned in the title 
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Thank goodness “dead hot” pixels are not a thing … 