Originally Posted by zing

Froyo is getting closer there is a new release available through keys in test mode.

Anyone who has the SGS with a none UK firmware wanting to use keys for offical firmwares will be told that there device can not be upgraded. This is how you get around that ( info incomplete on xda so I had to suss it out myself)

connect phone and run kies make sure its connected

on pc run regedit then navigate to this key HKey_current_user\Software\Samsun\Kies\DeviceDB\12

there will be a list mine is 1 to 9 there could be more. You need to look to find which folder relates to your device.

First thing I would do is right click on the key and select export and save it somewhere

open DEVCONINFO and delete the information and close
open HIDSWVER delete the information and close
open Product Code and make sure the info is GT-I9000HKDXEU
open Softwarerevision and make sure it says I9000XXJF3/I9000OXAJF3/I9000XXJF3/I9000XXJF3

exit regedit

Back in key which should be open all the time through this

Open firmware upgrade, press ctrl alt u p this will go into test mode. You then should be offered the new firmware. This is only a beta still in thoery when Froyo is released you will not need test mode

edit added for completion
8. Finally once it has upgraded after it has rebooted you may get a black screen and it vibrates a few times.. this is normal and when this happens hold Volume up + Home + Power button to boot in recovery mode, then Wipe data/ Factory reset.

9. Then when booted you should have some Lovely froyo on your Samsung galaxy s

Once Kies is closed next time you connect you will need to modify the registry again

I personally am still going to wait for proper Froya release


Usual disclaimer with registry mess at your own risk