I read some of the KDZ updator Treads but din't found the good one for windows 8.
and since that the jelly bean has been releasd for the optimus L9 ( what my current phone is) and that my laptop was running windows 8 64Bit.
I did some research on Google and found this site and found this siteall4phones(dot)de handy and it also worked for me. :victory MAKE AND BACK-UP YOUR PHONE WILL BE WIPED
What you need:
An LG optimus L(9
This software: KDZ_Flash-Package_LG.zip
IF you encouterd some problems feel free to ask
First install the B2CAppSetup AND MSXML otherwise it won't work
1. Check first the Host-Datei that the last rule is: 127.0.0.1 csmg.lgmobile.com
2.Run KDZ Server start(an cmd command will open LEAVE THAT OPEN thats the progams thats fools LG support tool
3.Run windows enablers ( there will be an icon on the down-right corner click one time on it. it should turn on)
4.Run Up testEX mod2 marvin the first multi-select should be 3GCT the second one on EMERGENY you click finaly on
normal web upgrade an pop-up wil show just click on the start upgrade and there wil show an other pop-up select your country an language and wipe your phone and then click on update
5. Just wait until the flash is complete.
6. Your done you can close al programs an click on kdz server stop.
you can play on your flash phone
I am not responsible if this brick your phone or Explode or break it use it on your own responsibility
FOR all4phones(dot)de for making the tut.
sorry if my english is bad i am only 16 years an i am Dutch. Cheers please hit thanks if helped