I got the same blue screen. I planned to install a new ROM and I followed the instruction on how to install a new ROM:Wipe data/factory reset, wipe cache partition, Under Partitions menu (or Mounts & Storage in 3.0.0.6) in recovery: Format boot, system, data, cache. Under advanced: wipe Dalvik Cache. Then I press "Reboot" by mistake, so I came here.
I have the same situation and tried to do the above, after I run the fastbootroot.bat, it showed "error: device not found <waiting for device>" , but I'm sure I connected my phone via USB with my computer, looks like it couldn't recognize my phone. I tried to reinstall the LG driver to my computer(running in Windows7 64Bit), it still can't recognize my phone. What's the problem????
PS: When I start the phone, this is the messages shown on the screen:
Fastboot mode started
gpio_i2c: invalid khz:0
bl:i2c write error
udc_start()
-- suspend --
-- reset --
-- portchange --
-- reset --
-- portchange --