bmw x1 e84 exchange ecu

[maruti]

hello
last week i done bmw ecu change but i change old ecu cpu & eprom my car stat
but for know & if fgtech read write other working ecu than it good , so i read one used car ecu & try to write my ecu
both ecu same tricore tc1766 bd , but it read 100 % & when i write it 6% give me error send file to support
i know with some tool isn chnge possible , but i want to know why writing give me error , if i write same ecu read data than it write but if i read
& try to write my ecu than error

if i change only eprom & check in car car not start & error code - p0000 dde anti-tampering protection

here i attach all photo , i compare both file some different in hex

thanks

[maruti]

here i attach both file of internal flash

thanks