[freeeeman]

then make complete format it will work
if don't work rewrite backup :
C:\Archivos de programa\InfinityBox\MModule\Gtran-N120_KCM_PCB01_GPRS_MT6227_S01.MAUI_06A_W06_44_MP_ V20__ffs_20091224-002755.B0E.bin

and make again complete format it will ask you NP code

the backup you should use is the first backup should read date and time of backup (in case you perform other operations, so you will have the same backup again the only suitable is the first)

and don't forgete to read full flashe at first

BR