Snowbreeze Invalid IPSW?

[Th3KaNgSt3R]

So I upgraded my iPhone to 4.2.8 then tried to jb with snowbreeze. I downloaded the 4.2.8 CDMA firmware file then put it into SNowbreeze.
It told me I have an invalid file.

I downloaded multiple 4.2.8 firmware files from different sites and even tried the one in my appdata.

It always tells me that I have an invalid file.
Does anyone know why?
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Also if I make a backup and use snowbreeze and restore from that backup after it's jailbroken can I still have all my data that I had before the jailbreak?

 

[kuebby]

I don't know about the IPSW file but as for your second question, after you JB you want to SYNC(!) your phone, DO NOT RESTORE, that will get rid of the jailbreak.

 

[awadeee]

Are you using the latest version of Sn0wbreeze? Sometimes different versions work with different firmwares. Maybe your Sn0wbreeze release is simply incompatible with 4.2.8.

 

[eastercat]

I'm not sure snowbreeze is appropriate for a CDMA phone. You should go to iclarified or jailbreakmatrix for appropriate JB tools for your iOS.