The following section goes into detail of the firmware recovery process for Kinkan when it does not boot any further than RealTek bootloader. This can happen during an accidental shutdown during the firmware upgrade process or any corrupted system files. Some recovery methods will require LAN and serial access. Note: any configuration changes made previously will be cleared!

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ATENTION! It is possible to brick your board while making changes inside the bootloader so make sure you are entering correct commands. If you make a mistake while typing use CTRL+C instead of backspace!

1. Install tftp client.

2. Set 192.168.1.254 IP address on your computer's ethernet interface.

3. Reboot Kinkan and press ESC when prompted to enter <RealTek> bootloader.
(no additional steps required via serial, just keep watching the upgrade status)

4. Transfer firmware binary to the device (execute command from your local computer).

tftp -m binary 192.168.1.6 -c put openwrt-8devices-rtk-v1.0-rtkmipsel-rtl8197f-kinkan-squashfs-sysupgrade.bin

5. Wait until process is complete.