Lucko and Mr. Teal,

the warm up problem exists also on Mr. Teals boards. But in fact it will only occur if the ambient temperature is low enough. I've got the problem after restarting my outside used chillies at 0 °C from Mr. Teal, too. They was not really long without work, but it was cold enough so the boards got exactly the same issue.
The fw patch with the preheating functionality looks like is also good working to have cleaner startup at low ambient temperatures on Mr. Teals devices. So I get the boards back after reflashing without bring them in my house nor heat them up by other work ;-)

What now is really needed next is that after cooling down the preheating restarts again so if my boards are interrupted from work e.g. network outage, they yould not resets. In fact I've also a problem with bfgminer. After a reset the /dev inode will change so bfgminer did not found them any more. So it will not restart the mining by themself :-( So preventing the device from reset will be very helpfull.

The other point some of my devices have > 125 Engines enabled. They becomes the problems if the voltage increases 1.14 V. If i change my cooling so the voltage will not arive higher values all is fine. Maybe 1.1 (or 1.13) limit with the warmup fix will be welcome ;-)

And it would be nice to see which fw is installed by the version number?

Cheers...