hi...
i upgraded yesterday mi first gen iphone 8gb succesfully and wanted to share mi experience just in case someone needs help.
iphone background: first gen 8gb week 30 1.0.2 otb.
performed the following 1.1.1 upgrade then 1.1.2 then 1.1.3 then 1.1.4 then 2.0.1 then 2.1 all with unlock and jailbreak.(this is since i got it "14 months ago" till now. not all at same time.) until yesterday i got it up to 2.2.
i did the process using windows vista.
ok guys here is what i did:
first i downloaded the iphone 2.2 firmware and quickpwn 2.2 windows from here:
http://www.modmyi.com/forums/iphone-...jailbroken.htm
then...
as i was using stacks and categories, i removed all folders and subfolders and everything from categories and stacks out to the main springboard.
then i did a backup of my phone using this guide:
http://www.modmyi.com/forums/general...elatively.html
then...
from 2.1 firmware jailbroken and unlocked using quickpwn i went ahead and upgraded itunes to 8.0.2.
then...
I shift+update iphone with the previously downloaded 2.2 firmware.
then...
imediatly after the update i did shift+restore to the same previously downloaded 2.2 firmware so i can get a fresh and clean firmware. (i did it like this
update and then restore just in case it wouldn`t restore directly). (so i don`t know if you can restore directly)
make sure you have the 3.9bin and 4.6bin if you want to unlock
then...
went ahead and opened quickpwn previously downloaded, and followed instructions to jailbreak and unlock.
20 minutes later (upgrading process only) it was on 2.2 firmware clean and everything working perfectly.
last...
i followed instructions on the same page from where i did the backup process to restore all my apps, sms, addressbook, etc.....
hope i helped you in need, and again this is what i did and worked for me.