I finally managed to get my sick Q7 (would not turn off, would not boot or re-flash) up and running after many unsuccessful attempts, so I thought I would post my method here in the hope it will help someone else.
Firstly prepare an SD card
Format the SD card with the Panasonic SD Card Formatting Tool.
http://panasonic.jp/support/global/c...formatter.html
Doing this is
highly recommended as I wasted several days using a card that had previously worked OK with my Q7 and still worked fine in my PC, but subsequently turned out to have 4 strange partitions on it when viewed on my now working Q7.
Now use the SDUpdate/Card Fuser Tool on the newly formatted SD card.
http://www.jiongtang.com/fourm/viewtopic.php?f=17&t=746 Copy a SmartQ7 firmware file onto it and press the (●) key (top right) while powering on OR reseting the Q7. There is a longer delay than usual before the flashing started but once it did everything went well from there on.