Zsun Wifi Card Reader Can Now Run OpenWrt
Zsun Wifi card reader is a tiny micro SD card reader with WiFi connectivity, and while people managed to access the device serial console a few months ago, the plan was to eventually run OpenWrt since it’s based on the popular Atheros AR9331 WiSoC combined with 64MB RAM and 16MB SPI Flash. It would also be one the smallest OpenWrt capable device with dimensions of 30 x 33 mm. A team of Polish managed this feat, and have now posted instructions to install OpenWrt, as well as other documentation, for example a description of the board’s GPIOs. There are four methods to flash OpenWrt: Solder on an Ethernet jack and flash from the original uboot (hard but safe) Reflash the bootloader from the original firmware to one that supports upload over serial (less soldering but fatal if you mess up) Reflash the firmware from the original firmware using mtd_write (easy […]