The only permanent mistake is updating baseband & losing ultrasn0w unlock
Thanks
DJRaz55
For the latest updates follow@DJRaz55 on Twitter.
If you have a unlocked iPhone probably on a carrier other than AT&T like T-Mobile do not update to iOS 4.1 you will loose your ultrasn0w unlock and not be able to use your phone unless it is on AT&T. The unlock for 4.1 may come later.
Thanks
DJRaz55
For the latest updates follow@DJRaz55 on Twitter.
It’s a trap!
Today you’ll likely start seeing iTunes innocently offer you a new version of iOS…version 4.1. Don’t accept it…it’s a trap!
This time of year there are lots of new iPhone owners, and not everybody knows that accepting new iOS updates is the surest way to lose your jailbreak and/or unlock. While those of you who have Cydia or TinyUmbrella backups of your FW hashes will always be able to get back to 4.0.1 if you make this mistake, this doesn’t hold for unlockers. There’s currently no known way to revert your baseband — if you update your baseband you’ll lose the ultrasn0w unlock, possible forever.
Thanks
DJRaz55
For the latest updates follow@DJRaz55 on Twitter.
iPhone4 baseband isn't updated in 4.0.2, but ultrasn0w requires JB. 4.0.1 SHSH blobs will protect you from "oops" update
Thanks
DJRaz55
For the latest updates follow@DJRaz55 on Twitter.
ultrasn0w upgraded to version 1.1-1 they tweaked a few things that may help with standby battery life, you can upgrade via
Cydia.
Every time you update ultrasn0w (or Signal), CommCenter must restart. Restarting works in most cases but sometimes you need to reboot.
Thanks
DJRaz55
For the latest updates follow@DJRaz55 on Twitter.
ultrasn0w now supports the iPhone4!
Version 1.0-1 of ultrasn0w works for:
iPhone4 baseband 01.59
3G/3GS basebands 04.26.08, 05.11.07, 05.12.01 and 05.13.04
(If ultrasn0w doesn’t show when you search Cydia, add the repo: repo666.ultrasn0w.com)
Enjoy!
Thanks
DJRaz55
ultrasn0w 0.93 released! Cydia repo is repo666.ultrasn0w.com. Works with basebands 04.26.08 thru 05.13.04
ultrasn0w tips: 1) Works for all basebands since 3.0 FW Remember to disable 3G on T-Mobile USA
Thanks
DJRaz55
If you have baseband 05.11.07 you can Jailbreak & Unlock your Iphone for use on other GSM Carriers. Ultrasn0w has been updated to 0.92 it is dowanloadable via cydia must add source
http://repo666.ultrasn0w.com
UltrasnOw now works with 3GS Phones. You first need to Jailbreak your 3GS iPhone
The main 3GS ultrasn0w glitch on hacktivated devices is: need to do Settings->General->Reset->Reset Network settings once
Ultrasn0w for iPhone 3G & 3GS is ready!
1.Ensure you have upgraded to iPhone OS 3.0
2.Jailbreak your iPhone 3G using redsn0w or PwnageTool (this will also install Cydia/Icy)
3.Run Cydia or Icy
4.Please add the repo repo666.ultrasn0w.com to Cydia or Icy. That last “o” is actually the number zero “0”! If you use the letter “o” you’ll get an error.
5.Search for ‘ultrasn0w’ in cydia or icy and install ultrasn0w
6.Reboot your iPhone 3G
7.T-Mobile USA users should disable 3G before using ultrasn0w
8.Enjoy
Note: Remember to never upgrade you firmware or do updates if you want to keep your phone unlocked.
If you have Firmware 3G 2.2.1 Baseband 2.30.03 do not upgrade your firmware until ultrasn0w is released. right now you can unlock your iphone using a GEVEY-3G-PLUS 2 SIM FULLY UNLOCKS FIRMWARE 2.2.1 (02.30.03) you can get one on ebay for $10.00.

