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Eyes in the Sky: A Comprehensive Survey of Ukrainian Unmanned Aerial Vehicles (UAVs)
(www.lvivherald.com)
This is a most excellent place for technology news and articles.
I highly doubt the mavics used in Ukraine still run the stock firmware
That takes more than firmware, and I don't know how much thats worth it compared to just using existing fpv hardware.
That was about the lock in part. Most of the mavic footage I’ve seen seems to be digital at least, though I recall something about them changing the RF frequencies constantly to avoid jamming.