So, there you have it, complete unlock solution for 306sh!
Here's the instructions:
1. rename 306sh_RUIM.txt to 306sh_RUIM
2. install and run UICCUnlock(the name does mean nothing) will remove perso lock
3. run 306sh_RUIM should set RTRE to RUIM only
Then the phone works with China Telecom.
Here's the instructions:
1. rename 306sh_RUIM.txt to 306sh_RUIM
2. install and run UICCUnlock(the name does mean nothing) will remove perso lock
3. run 306sh_RUIM should set RTRE to RUIM only
Then the phone works with China Telecom.