Dear LC90 users，
The Choyong LC90 radio will undergo its first upgrade at the end of March, with the new software version being LC90EN_CYOS_4.1.
This update is specifically aimed at the demands of American users and SWLs.
I would like to extend special thanks to @FarpointFarms on youtube for his videos and @Dan Robinson on facebook for his suggestions.
The main upgrades include the following points:
1: Added SSB function, supporting LSB and USB, with a minimum tuning step of 10Hz.
2: Increased the shortwave continuous tuning frequency to 30MHz.
3: Added voice search stations function. You just need to long press the"Lang" key, wait for the Mic icon to start flashing, and then speak out the radio station you want to listen to such as: "I want to listen to BBC world service"or "Voice of America.
4: Optimized the speed of entering from sleep mode to regular radio mode and starting playback.
5: Fixed some known bugs, such as screen flickering.
To ensure the uniformity of the LC90 firmware version in the future, this upgrade cannot be done over a 4G network, And can only be done by downloading the firmware on a computer and manually upgrading it. After this upgrade is completed, all subsequent version updates can be done over Wi-Fi.
Please go to the official website of Choyong (www.choyongradio.com) to download the upgrade tool and new firmware package, and follow the upgrade instructions. This process is a little complex, so please operate patiently.
Note1: The new firmware for the LC90Mini will be released at the end of June. The new firmware for the LC90 is not compatible with the LC90Mini. Please do not upgrade the LC90 firmware to the LC90Mini, otherwise, the LC90Mini will definitely be damaged!C90 firmware to the LC90Mini, otherwise, the LC90Mini will definitely be damaged!
Note2: Due to compatibility issues, the firmware only supports upgrading on Windows systems. We apologize for any inconvenience caused. Please use a Windows computer to download the firmware for the upgrade.
Note3: If you are unable to complete the upgrade through your computer, please email me at Choyongradio@gmail.com, and I will provide you with some assistance or suggestions.