hi, i solved my problem, my original version is chinese version, i flashed to vietnamese version and lost imei because vietnamese version's CMT can't be flashed leading to error above, however chinese version has PR 003 lower than vietnamese version has PR 454 so it can't be flashed leading to above error, so i flashed CMT from chinese version using ape-algo of Vietnamese version to force CMT flash is as follows: flasher -a DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_454-OEM1-958_ARM.bin -F DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_003-OEM1-958_ARM.bin --flash-only=cmt -f sorry fo my bad English!