echo getting apple firmware 1.1.3
httpget 1.1.3.ipsw http://appldnld.apple.com.edgesuite.net/content.info.apple.com/iPhone/061-4061.20080115.4Fvn7/iPhone1,1_1.1.3_4A93_Restore.ipsw
unzip -o 1.1.3.ipsw 022-3743-100.dmg -d .
echo decryptfirmware 1.1.3
vfdecrypt -i 022-3743-100.dmg  -o dec-1.1.3.dmg -k 11070c11d93b9be5069b643204451ed95aad37df7b332d10e48fd3d23c62fca517055816
dmg2img dec-1.1.3.dmg dec-1.1.3.img
echo getting patch file
httpget patch.zip http://devices.natetrue.com/iphone/patch112b.zip
unzip -o patch.zip patch.sd3 -d .
echo creating upgrade image
sdelta3 dec-1.1.3.img patch.sd3 > 113_upgrade_image.bin