can't change imei disire 500 after change emmc

after change emmc can not change imei
my xtc can set s off and change cid but when use change imei just show this erorr:
in direct mode:

Sending oem writeimei XXXXXXXXXXXXXX... (bootloader)
[ERR] Command error !!!
OKAY Execution time is 15(ms



i use sd mode but not change