checksum a bad ppm

[simlockboy]

hi guys can youll please tell me how to checksum a bad ppm file ,, coz when i put the ppm file it says the file is toooo small . and what operating system does the NFREE support ?

[nokiaguru]

Using what flasher?

What phone and version?

I can flash any file (almost)anywhere

[simlockboy]

well u see nokia guru ,, when i open a bin file in nfree which contains only the ppm file it says the file is toooooo small and i wanted to repair the bad checksums in the file its a 3310 version 5.03 ppm file ,, so can u tell me how to repai the bad checksum in the file nokia guru