The attachment software is for upgraded it to 2V LINE IN of LP-42M

LP_42M_20250429_LP42M_(LMF)V36_NOHDMI_升级_固定0x4458_KEY.rar

Please prepare a USB stick ( FAT system); Prepare the USB stick: Use an empty USB stick, put 1~2 MP3 tunes in it, and then unzip the file on your computer, then copy the unzipped file ‘LP_42M_20250426_LP42M_(LMF)V35_NOHDMI_Upgrade_Fixed0xB90C_KEY.MVAX’ to the USB stick, (note please don't change the file name）

Follow the steps below to upgrade:
1. Plug the LP42M into AC power and press the red on button of the remote control.
2. Plug in the USB stick, the USB stick will be read automatically and the indicator light on your USB will be red.
3. When you see the USB stick reading, don't move the audio any key to upgrade it and it will shut down automatically (enter standby red light).
4. Then switch off the power switch, and then switch on the power switch can be successfully upgraded.

LP_42M_20250429_LP42M_(LMF)V36_NOHDMI_升级_固定0x4458_KEY.rar