Good news for LG Windows Smartphone users that the latest Mango 8107 is available now, you can update via WP_LG update_tool. However, you’ll have to update to 7740 first, then you can update to 8107 normally. LG Windows Phone 7
Disclaimer: You should note that this process may void your warranty! I will be held responsible for any damage caused, or refusal of warranty, by following this guide.
Before you can update your device you’ll need to see if you can access the phone’s Download Mode. LG Phone Problem and Solution
How to manually Update LG Optimus 7 to 8107 Instructions:
LG Optimus 7 Phone Photos – LG Cell Phone Pictures
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Tried to upgrade but when I extract the cab into the sender it runs says done but nothing happens to the phone?