This little improvement may help you to enhance the wifi abbilitys of your device.
I had to open my box yesterday to check out the PCB Version oft the board (2.0);-)...
I noticed that the wifi-antenna is fixed at the case by a well known socket.
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In fact its the socket the fritzboxes 7050 and 7170 use. Years ago i replaced the antenna of my old 7170 with a 8dbi Antenna. These were sold as a replacement kit . I try out at my box and it fits perfect
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The pigtail is a bit long, but no problem. The replacement kits are still sold at amazon. Make sure that you have a rp-sma socket on your board, an not a soldered pigtail
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Have fun!