question about iphone firmware

[ubercaffeinated]

just being paranoid here, but could iphone firmware that i downloaded from public sources contain trojans (or worse)? i'm not sure what can or can't be done threat-wise, but my friend put me on his dev account for the iphone 3.0 beta, but the only way i can get a copy of beta firmware would be from public sources. does itunes do a check before uncompressing/installing ipsw files (ie is there some sort of checksum)? thanks.

 

[negatv]

If you get the beta firmware wherever, you can get the md5 checksum and pm me. If it matches mine that I downloaded from legit source, then it would be reasonably safe to say the one you downloaded is 'ok'.

 

[ubercaffeinated]

checksum pmed...

 

[negatv]

back at you..