**plz put invalid Sim to modem and then connect to the computer before unlock...
after that plz... detect the modem by using the correct port numbers (normally select only brand.. others set to auto detect.)
Don't change user name or password !!!
then use unlock.......
then check the status.... after the unlock the lock status of the modem should be unlocked......
No sim lock works with every sim card
3.6DL
support Win 7 64bit, MAC OS, Linux also
Complete DVD boxed pack
USB Extension cable
Neck Strip
6 months warranty
What's your Network Provider?
If your Huawei E1550 was network locked you can easily unlock it using the unlock code.There are many ways to get the code from service provider,Shops and so on..If you cannot get the unlock code from those service providers you may look at third party providers like Mobile-Unlocker.com where they provide permanent unlock code..After you can easily unlock your Dongle with the help of unlocking instructions..You can get the free unlocking instructions from MobileUnlockGuide.com