This was discussed at length a few months ago:
I’ve seen a few posts about the problems that people are having with changing propeller blades using the free screwdriver “kindly” provided by DJI. Further investigation led me to YouTube where a guy was performing an emergency prop change on a rocky beach in Spain.
Apparently, the screws that DJI use to secure the propeller blades (at least in the Mini 3 Pro) look like Phillips but are in fact “JIS ” standard which have a different profile where the screw “cross” meets. This is the reason that …
It appears that (although it looks like a Phillips screw) its actually a JIS screw (as pointed out by @stegib earlier in this thread) … no, I had never heard of them either!
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