Please I need help with my gps navigation Binatone Carrera T350

I installed unlocking software (MioPocket 4,0) on resident flash and device was working good.But I bought SD card and I transferred everything on that card and want to delete same files from resident flash. Then I made big mistake with that because now I can not connect my gps navigation with PC. I got a this message on device :

Communications Error

Cannot start communications with desktop computer. Remote Networking could not start due to a critical error (Error 608).

Please reconnect your device. if the problem persists, restart your device using the instructions provided by the manufacturer.

I tried many things to load from sd card even ROM for that device but it does not help, I think it does not recognize sd card as well???

Please if you have any advice or suggestion to solve this problem it will be helpful. Or ideas how to hard reset this device. Thank you