un-jailbreak ?

[skyeking69]

Is it safe to upgrade my winpwn 2.0.2 3G phone
in iTunes to 2.1? and un-jailbreak it ?
I love some jailbreak features but the slow performance/freezes and battery life
is pissing me off...

can it be done ?

[461am]

Yes you can. You should restore to 2.1, sometimes upgrading causes issues. Oh, and don't restore from backup, that's been known to cause issues as well.

[_ducky]

Yes you can. You should restore to 2.1, sometimes upgrading causes issues. Oh, and don't restore from backup, that's been known to cause issues as well.

Err, what are you supposed to do about your lost contacts/SMS's/etc?