Our Clarity still charges from 2 bars in about 2 hours 5 minutes. I'm guessing (with no way to verify) that the update tells the Clarity to restart charging if its overly sensitive (well, more sensitive than other plug-in cars) power-defect detector halts charging. If the halt-restart cycle occurs multiple times, it would take longer than usual to complete charging. If my suspicion is correct, then longer charging times would occur only if the Clarity detects EVSE power defects, but at least the update would make complete charging possible--EVSEs that do not challenge the Clarity's protection circuits would still charge as quickly as usual.