I got a problem with the newer GW-056. It didn't change automaticly. I tried to find out why this was the only Waveceptor that didn't change. If anyone has the same problem, this is the way to solve it:
Press adjust in time mode and press mode until DST flashes. It was set to "DST On" It needs to be set to "DST AT" (Automatic). I guess a classic case of RTFM...