Video 1 --- Renault Medianav 7.0.5 LAN5200WR@ Why happens? , Need Solution? Video 11

I flashed wrong Bootloader.bin file from WinCE 6.0. My actual bootloader.bin is Version 7.0.5, but I flash bootloader.bin file for version 4.0.6 by mistake. After this i have this problem. Now i used NK.bin file of version 7.0.5 to boot from USB, but the screen is not working. If i use other version NK.bin file to boot from USB, its not booting. I want to know how to fix it. I know the JTAG pin details for medianav, ,Com port 9 pin details and LPT 25 pin details. But i don't know the pin details how to link the medianav jtag port to Com port pin. Also i don't know what software is used for linking the JTAG to flash the NOR IC. Is there any way to put the upgrade.lgu file through JTAG, as its not working through USB. So somebody help me by sharing information to fix it. Please share me the information in comments or mail me : [email protected] Thank you.