Failing to programing V850ES/JG3 with UART

[stojke]

Hello , I am having problems sending code that was given to me, in binary format, to this microcomputer via UART0.
I have connected UART0 directly to my UART USB interface onto header of FTDI232 USB adapter , and the microcomputer responds to some given instructions, like erase, blank check, checksum, read (dumps perfectly valid HEX file that corresponds to given BIN file when converted, exactly the same data in original from chi and spare file), but it wont program. - I have been given an BIN file to work with, but either way an read HEX file wont program either.

When it fails writing I have to reset the micro computer and the visual led diode clearly shows when it failed, the microcomputer simply never responds again. Depending on the file I try it always fails at the same spot.

[stojke]

Somebody?