redsn0w won't recognize 2g 3.0 ipsw

[gusss]

redsn0w nor itunes won't recognize 2g 3.0 ipsw
I've downloaded this firmware file 4 times already from different mirros, but its just a bunch of files (not the white cube restore file ipsw)
Why?

[blkcadi]

Use firefox first of all, If the file you are downloading has a .zip extension rename it to .ipsw Do not try to extract the file.
Using XP or Vista. you need to open "My Computer"
XP - go to the top menu and select options > Folder Options
Vista - Top left button that says Organize > Folder and Search Options
In that window you need to click the " VIEW " tab on top.
NEED TO SELECT " SHOW HIDDEN FILES AND FOLDERS "
Then un-click the option to " hide protected operating system files "
Once that's done click "apply" then ok and exit out of the window.
Then go to this dir
users > "USERNAME" > appdata > roaming > apple computer > iTunes >
and the folder holding the downloaded file will be there.

Upgrade = click upgrade in iTunes
Clean restore = Click restore in iTunes and not restore from backup
Upgrading a major version needs a clean restore. Upgrading a minor version should be OK with an upgrade.
Same goes for backups - do not restore from a backup made in a FW with a major change but minor changes are fine.
A number change is major and a decimal change (eg 3.0 -> 3.1) is minor.

[sursture]

Agree with blkcadi...AND I can just confirm that
the site below has to me proven to be a reliable source of original FW.
iphonefirmware.com

Hope that helps