Root Problems Bricked

I went ahead and rooted following this thread http://ift.tt/1eoOh8Z and I have hit a problem, my phone now just stays on the LG Life is Good screen with the blue LED flashing. Can't get into bootloader main UI. I can however get into download but I am not sure the device is recognised by PC. I'll explain
All was going well and I got as far as step 6. I was in the right COM port, was COM3 for me so looked as follows

C:\Users\**********\Desktop\LG_Root>Send_Command.exe \\.\COM3
Author : blog.lvu.kr
SPECIAL COMMAND : ENTER, LEAVE

#

I went back to stage 6 and typed id. Just went back to # on next level with nothing after. So I pressed ctrl+C and used the "send command..." again, typed "id" and got this back

EXEC W ║º║╝#

Any ideas what's gone wrong and how to fix? Really regret trying this now.
When I first got the file I needed I didn't realise I needed to extract it twice. I downloaded file called

h81510c-eu.tar.gz

I then extracted that and got a file called

h81510c-eu.tar

At first I copied this to the root of my phone and tried running the command and immmediately got # straight back after running the command in step 7
dd if=/data/media/0/system.rooted.H81510c-EU.img bs=8192 seek=55296 count=529920 of=/dev/block/mmcblk0
I then realised this wasn't yet an img file and needed to be extracted again so I extracted the tar file listed above and got file

system.rooted.H81510c-EU.img

Copied this to the phone and ran through the steps again and when I got to step 7/8 again immediately after running the command above starting "dd.." the # came back up. I figured it didn't work still as the thread says "after a few minutes..." but I left it a couple of minutes anyway with nothing happening, but on typing "LEAVE" it stayed in download mode rather than restarting. This is where I started to worry. I left it a while longer, nothing happened. I saw on the other thread that was linked in the one mentioned above that a battery pull may be necessary so I did that, then the boot screen problem.​

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Root Problems Bricked