To those who have gotten an "E" on their recent-revision V1: did you take note of what other LEDs where lit up while the "E" was displayed?
AFAIK, the pattern of LEDs displayed during an "E" provides info as to where the failure is. At least this was the case back when I had my 1.7 V1 with a fried memory chip.
So, if you get an "E", write down what LEDs are lit in the signal strength meter, band indicators and arrows. Or take a picture of the display. Include this when you send the unit in to VR for repair. It may help them isolate the problem.