Just got my S1 upgrades done (finally, the kit has been here for about a week). Great news two of my S1's are now hashing at 478GH/s each at the first attempt.

I haven't upgraded the firmware yet as the Bitmain site seems to be offline but just changing the values in asic-freq to the default level for S3's has got me hashing at a much higher rate, and using less electricity!

I am sure my natural exuberance will be tempered by an increase in difficulty and global hashing rate, but just let me have my few minutes of enjoyment as i watch my hash rate grow.

I found it very easy to strip down the S1 and install the upgrade, but I think Bitmain went over the top when they put the thermal grease on the S1's as there was loads, and it was quite uneven. In my experience its always best to have a smooth even coating to get the heat away from the board.

I hope that the firmware upgrade will be simple and i intent to do it ion the next few days.