Here are 2 free simple ways to get your stubborn huawei 300 series USB modems unlocked with varying unlocking codes.
Literally, most version and model of huawei usb modems are simply unlocked with the traditional USB modem unlocker software that works on the techniques of generating huawei usb modems unlock code and flash code.
But the reverse is the case for novel huawei USB like huawei E303, E357, E69 etc. as their respective unlocking process is difficult and hard to successfully complete.
Here are two simple unlocking tool and calculator for generating their unlock codes
Method 1: Using Specific Version of DCcrap or Dc unlocker a version that uniquely can be gotten from Dc unlocker software client
After a successful download and saving of this software on folder/location that can easily be accessible then, Plug in your huawei usb modem(s) whose unlocking code you could not easily generate from the normal huawei unlocker tool.
Thereafter, install the dc client software and run the application from your PC. Allow the user interface to automatically detect the modem upon plugging into your USB port, then select your huawei version e.g huawei e303.
Then in the Unlocking Tab, select the Generate Unlock Code by IMEI and click on Do Job
the unlocking software will automatically do the wizardry job by providing you the unlock code of your modem
Click Here to Read Method 2 tutorial using LoginPlus client v5.0 unlocker softwarePost updated 17th July, 2013.