@Radfone,
I had the same firmware as you have when I bought my phone.
Look at page 17, post #246 by Aws3ya.
For cfw 2.2 for classic iphones
Download his custom firmware file.
MEGAUPLOAD - The leading online storage and file delivery service
Place the cfw on your desktop.
Download iTunes 8.0.2.20. 65mb
You can go here
Download iTunes 8.0.2.20 - FileHippo.com
Install iTunes. And let it see your phone.
After install, the "info" tab settings like Contacts, Calender, Mail Accounts, Web browser should have stayed the same.
Sync your phone one last time before restoring.
"I like to turn of my windows screensaver for things like this. But that's my 2cents"
Now, press and hold the "shift" key on your keyboard and click the "restore" button under the "summary tab" in iTunes.
A window pops up to find the custom firmware on your desktop.
Select iPhone1,1_2.2_5G77_Custom_Restore_Stable_LotsOfGoo dies.ipsw
Itunes will now extract file and setup your phone for restoring.
Now at this point leave the phone and iTunes alone.
After a few minutes a popup comes up from iTunes saying your phone is ready and will reboot.
Leave your phone alone.
After reboot, iTunes will notice it. But leave iTunes alone too.
Look at your phone. At this point your phone will be flashed twice.
Once by bootneuter and again by I forgot which one. But it will.
After the second flash process. On the phone's screen a popup is saying it's rebooting.
Now it's almost ready.
Go in iTunes it's giving you two options "new" or "restore from backup".
I selected "restore from backup" and let it sync from my LAST previous backup.
This is only to allow me to keep my basic phone settings the same.
You can click "new" but I don't know if you have to go through resetting your the edge settings for tmobile and what not.
Maybe someone else knows about this for sure.
Once it's done restoring from your previous backup.
iTunes will tell you it's rebooting the phone.
Your phone will reboot and you are done.
Itunes will show your phone is on FW 2.2.
I hope this helps you.
Now, i have a question for anyone who has this happen to them.
When bring up iTunes and it sees my phone. A window comes up asking to update the carrier settings for my phone. Should I allow this? Or cancel it from messing up my phone in some fashion.
Thanks in advance.