8. How to upgrade the firmware for K15?
[Before upgrading the firmwares for the K15, please note the following]
1. K15 firmwares including: Main controller firmware,MCU firmware, XMOS firmware upgrade and Bluetooth firmware. Please read the corresponding instructions before updating.
2.Except for connecting the K15 to the computer, it is recommended to unplug all other devices or decoders connecting to the USB ports;
3.It is recommended to use USB2.0 data cable. Priority to use the USB cable comes with the K15.
4.During the firmware upgrade process, please do not disconnect the power supply or unplug the USB cable to avoid upgrade failure.
5.After all upgrades are complete, please turn the AC power switch in rear panel off and on once to let the entire K15 system to power up and reboot.
[Main controller firmware upgrade instruction]
OTA update
1.Connect the K15 to the network.
2.Select Main controller Local Upgrade from Settings-Others-FW Update-Main controller(SOC) online upgrade
Solution for K15 OTA upgrade failure: Click here
Local update
Main controller firmware local upgrade video instruction: https://youtu.be/anhViDWo4Ws
1.Download the SOC firmware upgrade package to your computer (the upgrade package has a ".zip" file extension, please do not unzip this file). Copy the upgrade package to the root directory of a USB flash drive.
2.Connect the USB flash drive to the USB A port in the back panel of the K15
3.Select Main controller Local Upgrade from Settings-Others-FW Update-Main controller(SOC) local upgrade and wait for the upgrade to complete. After the upgrade is complete, the system will reboot automatically.
4.After all upgrades are complete, please turn the AC power switch in rear panel off and on once to let the entire K15 system to power up and reboot.
Note:
1.Before upgrading, please make a good backup of the data on the USB flash disk to prevent the data on the USB flash disk from being corrupted due to abnormal power loss.
2.USB flash drive formats supported for upgrade: FAT32/EXFAT/NTFS
3.Please wait for the upgrade process, do not pull out the USB flash drive and do not power off the K15.
4.You could check the main controller firmware version from menu setting-About K15. The firmware has been updated correctly if the latest vesion number is shown.
[Solution for K15 main controller upgrade failure]
Local Upgrade Failure (Unexpected USB Removal/Power Loss)
Recovery Steps:
1.Reconnect power to the K15.
2.Reinsert the USB drive and the device will resume the upgrade automatically .
3.If unsuccessful: Please format the USB drive (FAT32/exFAT recommended) and copy the upgrade package (*.zip file) to the drive. Then reconnect power and reinsert the USB drive to restart the upgrade.
OTA Upgrade Failure (Unexpected Wi-Fi/Ethernet disconnection or power loss) with device freezing in "Updating" screen
Recovery Steps:
1.Ensure the router remains powered (Wi-Fi) or reconnect Ethernet.
2.Power on the K15 and it will reconnects to the same network for OTA upgrade automatically.
3.Upon successful connection, the upgrade resumes from the interruption point.
4.After completion, the device reboots automatically.
If the upgrade fails and keeps stuck in “updating”for more than ten minutes and can't be recovered by restarting or reconnecting to the network, you would need to use a USB flash drive to fix the problem.
Recovery Steps:
1.Download the latest firmware from the official website.
2.Copy the .zip file to a USB drive and unzip it manually. Then rename the unzipped folder to K15_update_images (do not modify file hierarchy).
3.Insert the USB drive into the rear USB-A port and power off the K15 completely.
4.Hold the RESET button and then turn on the AC power switch (keep holding RESET). Release RESET once the black "Updating" screen appears.
5.Wait for about 10 minutes for firmware upgrade completion and the device will auto reboot.
[K15 Network connections instruction]
1.Slide right on the screen to enter the menu settings-network settings.
2.Select wired or wireless network to connect;
3.For WiFi connection, you can enter the WiFi password directly through the touch screen and then confirm it.
Note:
K15 can only remember one WiFi message at this time.
[MCU firmware upgrade instruction]
MCU firmware upgrade video instruction: https://youtu.be/WN-fyWZ53fQ
1.Download the MCU upgrade package to your computer (the upgrade package is a file with suffix ".bin").
2.Connect the RS232 port in K15 to the computer with a USB cable.
3.Select MCU Upgrade from Settings-Others - FW Update-MCU upgrade. There will be a USB flash disk shown in the computer now. Copy the upgrade package to the root directory of the USB flash disk. Then eject the USB flash disk in my computer and the upgrade will start automatically. After the upgrade is completed, the system will reboot automatically.
[XMOS firmware upgrade instruction]
The XMOS firmware could be upgraded on the computer.
1.Connect the [USB IN] port in K15 to the computer with a USB cable.
2.Use the XMOS upgrade tool and firmware files to upgrade.
[Bluetooth firmware upgrade instruction]
After connecting the K15 to mobile phone via Bluetooth, you could upgrade the Bluetooth firmware via the FiiO Control app.
