How can you tell autotune is finished?
How do you save those freqs?
1. Enable logging and debug, look at the log to see when autotune is finished. If you see anything that looks like this auto-tune is still working: 1@4 925MHz: Got nonce cce16c5e, Hash <= Htarget! (0x81603880) 78.3 KH/s
2. Save frequencies(the pencil) is right next to the refresh button in 'Miner details'