[HELP] Upgrade X5 to X8.5

Hi

I own a after market In Car Head Unit that runs on WinCE 6.0 and come with in-build GPS that runs Papago X5 with maps dated 2010.

All the X5 software is store inside a Micro-SD card.

5502

I would appreciate if anyone could help me on the upgrade to X8.5.

Thanks in advance.