Failed to boot on firmware 7.1.69
Yesterday I updated my Kinoma Create to the newest version 7.1.69. It works fine for a while. But today, during debugging my project with I2C NFC reader connected to the backward I2C pins, my Kinoma Create stopped working. Then I tried to reboot by pressing power button for 10 mins. After rebooting, there is only a kinoma logo on the screen. No Kinoma home screen appeared after 10 minutes. Unfortunately, I do not have set up bootable SD card yet. Could anyone give me some instructions to make bootable SD card? I'm familiar to the Linux command line, so if anyone can tell me URLs for the OS image, I think I can make a bootable card.