[Q] 3g problem in samsung i900

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my Rom didnt support 3g
so i upgraded to another rom
but i cant install phone part
always fail at phone part "which is the point that will fix 3g"

i think i need something called Samsung CDMA Technology

but im not sure why it fails

im using windows 7 and grandprix
thx for help

OnDeviceChange: DBT_DEVICEARRIVAL
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PDA Device 1 ready to download!
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PDA 1 starts downloading...
Don't plug it out until the label becomes blue!!!
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PHONE will be written.
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Downloading PHONE...
KW.KIM Create retry(25)
KW.KIM Create retry(24)
KW.KIM Create retry(23)
KW.KIM Create retry(22)
KW.KIM Create retry(21)
KW.KIM Create retry(20)
KW.KIM Create retry(19)
KW.KIM Create retry(18)
KW.KIM Create retry(17)
KW.KIM Create retry(16)
KW.KIM Create retry(15)
KW.KIM Create retry(14)
KW.KIM Create retry(13)
KW.KIM Create retry(12)
KW.KIM Create retry(11)
KW.KIM Create retry(10)
KW.KIM Create retry(9)
KW.KIM Create retry(8)
KW.KIM Create retry(7)
KW.KIM Create retry(6)
KW.KIM Create retry(5)
KW.KIM Create retry(4)
KW.KIM Create retry(3)
KW.KIM Create retry(2)
KW.KIM Create retry(1)
KW.KIM Create retry(0)
Download failed!!