Dear Friend
Please follow these steps to do the update
Step 1: please download this link,it is OS update file
https://mega.nz/#!XtQgwaZD!Lrnhg2aHf...ixYZRA6d2bjV64
first unzip the file, this file have 2 update file
please copy the “os_update_KC1C0101-M01-2.0.4.1
.10_20171120_144631.zip” to a format USB or SD card directly,don’t need unzip the OS-update
then open the radio,put the SD card to SD slot or put the USB to USB port.radio will update by itself, after finish the update,please remove the SD card or USB
step 2: update the MCU
https://mega.nz/#!GgpSxb4Q!7KQl9sOTg...QeaC7f0Q-B3Gyw
please download this file and unzip it
please copy this” mcu-20170926-0954-P7786.bin. to a format SD card,then choose MCU update
radio will update again by itself, after update,please remove the SD card
for these detail,please watch this video:
https://www.youtube.com/watch?v=ZJ32P9EPtGw&t=27s
if you have any problem,please contact us free
Thank you for your support!
Eunavi