I am having a difficult time trying to update my AF100. The camera came with a battery charger with a DC port, but with no DC cord so it can be plugged in. I ordered a DC Cord on the Panasonic site, but it is on backorder. As you know, you can't update while running on battery power. How are all of you updating? Any work-arounds? Do these battery packs that you can buy work for updating? Thanks for your time!