Huawei has launched E303 model in various countries, some are directly unlock-able using only Unbranded Huawei mobile partner software, as i have unlocked Hutch E303 modem. I mean to say that Huawei has launched E303 modem somewhere with uncustomized firmware and on some places customised firmware. Un-customised firmware Huawei E303 modems can be unlocked directly using unlock code and unlocking tool.
huawei e303 modem
huawei e303 modem
But, if your Huawei E303 modem comes with customized firmware then   above mentioned link solution will not work for your modem, and your Huawei E303 Hi-Link modem can not be unlocked through normal procedure.
 
For unlocking Huawei E303 customised firmware modem you need to first flash the modem with uncustomised firmware and then you can follow the normal procedure which is available step by step below.
 

How to flash Huawei E303 customised firmware :

  1. Download all the software / firmware from the link which is provided at the end of the article. 
  2. Now run Universal Master code software, select Huawei tab and generate flash code for your modem.
  3. Now run the download firmware file of Huawei E303 modem and when ask for password / flash code then provide the flash code (which you generated earlier) as your password.
  4. Now wait for finish the flash process.
  5. Now Close any runing software / dashboard / connection manager.
  6. Run the CardLock_Unlock software / tool.
  7. Now put your 8 digit unlock code into the unlock code box and click on OK.
  8. Now you will get message “Unlock Success”.

Note : Don’t enter any wrong unlock codes into your Huawei E303 modem, it is a new security code modem and contact on email kamlesh2011@gmail.com to get unlock code in cheap rates only 1.50$.

 
(Firmware Version 21.157.31.00.850)
Note : Huawei hilink firmware starts from 22, don’t try in normal modem.

41 COMMENTS

  1. I
    have problem with my hauwei e303 modem. When i insert a different SIM
    into the modem it will dispays an error that reads ” Only the specified
    SIM/USIM card can be used on the device ” , and when i try to update
    the fireware it will read error like ” Error Code 19, Update failed ”.
    I don’t know what to do next, please can anyone help.

  2. have problem with my hauwei e303 modem. When i insert a different SIM
    into the modem it will dispays an error that reads ” Only the specified
    SIM/USIM card can be used on the device ” , and when i try to update
    the fireware it will read error like ” Error Code 19, Update failed ”.
    I don’t know what to do next, please can anyone help.

  3. I have bought a huawei E303i-1 with firmware 21.521.31.00.00. Modem already unlocked.Your firmware updater stop responding after finding port. Also tried another version of firmware but did not work. I hope anybody will find solutuon for me.

  4. help me to unlock my e303 modem because I download firmware update tool and it ask password which password I have to put

  5. sir..
    i am having a huawei 303 ds-1 and i want to unlock it.I had tried the E303DUpdate21.157.31.00.850.But it is showing error 19..how to fix this problem.
    Imei num :860369011380068
    Unlock code:54768569
    Flash code 60893884

  6. I flash the wrong firmware (22) on a modem E303. Now I can only see the the cdrom drive but no COM port. Is there any solution to flash again ? modem is not present in mobile partner 🙁 how can I debrick the key?

    thank you

  7. Hello Mr. Kamlesh. I have a idea netsetter (Huawei E303h-1) and I want to unlock it to use it with other operator. I am ready to pay any reasonable price whatsoever but please tell me the method to unlock the device.

  8. After i enter the flash code(password) the download will go and stop,it will say error 19/failed….and i noticed the modem icon data is not there anymore…it eject automatically by not being in the computer again

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