Hi,

I've spent the better part of today trying to unlock my iphone all to no avail...
Located in China and read a thread on updating Cydia in China, and followed all the steps as best as I could, but still not working.

Here are the steps I followed:
1. Jailbreak using Spirit
2. Download iphone browser
3. Downloaded afc2add on Cydia
4. Edited hosts file located under CWindows\System32\drivers\etc to
##
# Host Database
#
# localhost is used to configure the loopback interface
# when the system is booting. Do not change this entry.
##
127.0.0.1 localhost
255.255.255.255 broadcasthost
::1 localhost
fe80::1%lo0 localhost
echo "
93.184.221.133 cache.saurik.com
"

5. Replaced hosts file in iphone root directory using iphone browser

Reopened Cydia and tried to update and install Ultrasn0w, but still not working.