Is cgminer supposed to be upgraded automatically when the firmware is upgraded? I just performed the firmware upgrade on one of my SP20s and it still shows cgminer 4.7.0 on the dashboard page.
Try a
Reboot from the miner's home page. That's what did it (cgminer 4.8.0) for me.
Tried the reboot, still 4.7.0 cgminer
4.8 is only active when you set the 2 flag after version 2.5.64
BTW -- did we find out what new features 2.6.1 has?