im trying to flash it back to generic

hi.can someone help me?i got this error when trying to flash my em7455

Flashing SWI9X30C_02.30.01.01_Generic_002.045_000 onto Generic Sierra Modem...
loading device information before the update...
setting firmware preference:
firmware version: '02.30.01.01'
config version: '002.045_000'
carrier ...