I am trying to flash new firmware, I got to the RUU screen (With the HTC logo in the middle), but seems out of so many trials to get it to wake, now my battery is low and fastboot doesn't allow me to flash:
c:\adb>fastboot flash zip 5.1...
how did you recognized that you are in fastboot again? did your screen turn on again?
Yes, it has booted and screen is lit and I am in fastboot. Now wondering what is the best next step... Which firmware should I upgrade with......
did you release the power button while switching from + to -?
Yes, each time. I also tried pressing both + and - at the same time, but that was not the winning combination.