i used the same cable i had for the 7000 when i got the 8100 over the summer and i downloaded the driver for the 8000 directly from the lg website, and it worked. i'm also still using bitpim 0.7.35 unofficial development version. i know you can go to settings browse the COM ports and it should bring up all avail ports and if there is any connected then select the one u see for yr phone. then change the settings for model to lg 8100 i dunno if this helps hopefully if not just send me an email i'll help you as much as i can
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