If you are experiencing issues properly detecting the USB Ethernet adapter on your Trofa, first confirm that it uses the correct chipset detailed in our setup article.
In machine versions 0.5.14 and up, we've also improved Ethernet detection on boot. Please check with our support team to ensure you're on this version.
Should you still find that the machine does not pick up the Ethernet connection, you can update the kernel of the machine's tablet to ensure the driver for the adapter is properly supported. Follow the instructions below.
Equipment needed
Small pliers, wrench, or nut driver to remove 7mm nuts; microUSB cable, Windows-based PC.
Steps
1. Download the zImage.ct-ng.asix.n7 and adb-setup-1.2.exe files to a Windows computer.
2. Behind the door of the Trofa machine, locate the four nuts affixing the retaining bracket of the Nexus tablet. Unscrew these and remove the tablet, carefully unplugging its USB cable.
3. Connect the tablet via a micro USB cable to the computer. Once connected, simultaneously hold down the power and volume down buttons on the side of the tablet, continuing to hold through its reboot until it arrives at a black screen with a green Android logo.
4. Run the adb-setup-1.2 installer, typing Y and Enter at the two prompts. After installation, open up a Windows command window (Start > Run > cmd). Type fastboot devices and hit enter. If the tablet is recognized, you'll see a string of numbers/letters followed by 'fastboot'.
5. If the tablet's screen says in the lower-left corner 'LOCK STATE - LOCKED' run:
fastboot oem unlock
The screen may change on the tablet, requesting you to confirm the unlock. Use the tablet's volume buttons to select 'Yes' then confirm by pressing once on the power button.
6. Run the following, replacing C:\path\to\zImage.ct-ng.asix.n7 with the location of the file on your computer. You can get this by dragging and dropping the downloaded file onto the command window after typing a space after 'boot' in the following command:
fastboot -b 10000000 -c "root=/dev/mmcblk0p3 ro debug loglevel=8" -n "800" flash:raw boot C:\path\to\zImage.ct-ng.asix.n7
7. It will take about a minute to flash, finishing with 'Success'. If you receive a 'Failed' message, try a different brand USB cable and port on your computer.
8. After a successful flash, replace the tablet in the machine and reboot.
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