NA350 IBTR Software upgrade method,
1. Delete all files inside the USB devise
2. Copy the “RU5350-T51_nonOE_V05.03.5_PP.LCS” software files and some MP3
songs(more than 4 songs) into the USB device
3. Insert usb devise into unit
4. Unit panel LCD show “update?”
5. Press volume key to confirm sw upgrade, then LCD show “write
01,02,03………100”
6. Unit automatically power off and panel button illumination will turn off
7. SW upgrade successfully
8. Can turn on the unit to play again
Pls Press the Infor+ 4 to chech the SW version ,if shown V05.03.5,that stands
you have upgrade to latest version