1. Possible Issue with the One Control Chip Fixed and Extra Protection Added. The V4 had a vulnerability that showed up in about 5% of the units. Certain BECs were allowing too much voltage to flow back to the board, damaging one of the chips; thus the need for the modified servo cables to clip the voltage. The protection is now on the board, so there's no need for the modified servo cable. It protects up to 24V accidental input through the servo inputs.
2. Elimination of Chokes. Read more [...]