Made the mistake of upgrading my A1 to firmware 1.11. Wireless connection would drop every 15 to 30 sec. Returned it and got a rev. B1. Wireless connection seems stable. WAN connection did seem to drop every once in a while, installed firmware 2.02 and so far it seems to have fixed that issue but only time will tell. I also prefer tthe look of the B1. The front panel is much easier to read.