TL;DR; This is a really good quad if you can get a serviceable quad. Good: Have fun flying. Decent flight time with 300mAh batteries. Decent factory beta. Good in itself, but BetaFPV is the only vendor to include batteries and they have about the same quality control (3 out of 8 tested at 70% of their rated capacity). The first failed after about 20 seconds of flight (lost connection and crashed to the ground with a purple LED flashing and no other spectacles of life). There is no documentation for this, and the information on the BetaFPV website is mostly wrong. For example, the CLI dump they provided for this quad is for the wrong target (the BF target for this quad is MTKS/MATEKF411RX, the CLI dump is for BETAFPVF411RX and doesn't work for either firmware variant. I was able to revive the quad (for a short time), after getting the CLI dump from the replacement, I was able to get the quad flying again for about 30 seconds and the same crash happened, fingers crossed.
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