i have an original iphone as well. Got this off the i-phone dev team blog
So, as anticipated our friends the misfits have recently released the long anticipated 2.2 update. We can confirm that this update SHOULD NOT be applied if you want the chance of a soft-unlock in the near future.
Some facts:-
* The 2.2 firmware for 3G contains a baseband updater for the 3G iPhone
* The 2.2 firmware for 2G (1st gen iPhones) doesnt contain a baseband update and is still at 04.05.04
* We believe that our Pwnage technique (and therefore the Jailbreak) isnt affected, but PwnageTool and QuickPwn do not support this release as yet, so dont install if you have third-party (non AppStore) applications that you want to use right now
* We are not working on the 2nd generation iPod touch at the moment, so we cannot comment on what applying the 2.2 software update for this model may do.
So, as always, if in any doubt delay the install of this firmware on any of your devices until we have further instructions.