how to calibrate mp4
 

Hi ! after google-ing a few hours and searching this forum i didn`t find any answer so i decided to open a thread.I have a teac mp-540 and my screen isn't calibrated anymore.it went a few cm's left.any advice on how to calibrate ? I hope yo come with answers.I`m desperate.I reinstalled the firmware from the site and no luck,even tried with other firmwares.here's info from chip genius
PnP Device ID: VID = 071B PID = 3203
Serial Number: USBV1.00
Revision: 1.00/1.00

Device Type: Standard USB device - USB2.0 High-Speed

Chip Vendor: RockChip
Chip Part-Number: RK260X

Product Vendor: (N/A)
Product Model: MP3 Player