Tutorial How to Write IMEI and SN Number to a Huawei Modem or MiFi

johnboscoville

Administrator
Staff member
#1
This is a step by step guide showing how to fix/write IMEI and SN number to a Huawei Mifi. Null IMEI on a Huawei MiFi is usually the result of tampering with the NVM, those who unlock their devices by flashing USB loader will notice that the device no longer has a valid IMEI or SN. The device might still connect to the internet and work properly BUT it will no doubt be better to have everything in perfect condition.


Requirements
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  • Huawei MiFi with corrupted IMEI and SN number
  • USB cord
  • The guide assumes that you already installed the necessary drivers before now. If you haven't done so then search online for, download and install the necessary drivers for your device.
How to Write IMEI and S/N to a Huawei MiFi or Modem

The steps below explain how to write IMEI and S/N to a Huawei MiFi and fix invalid/null IMEI

  1. Disconnect the device and insert a working sim of your choice (you'll get an error message if you try writing IMEI without a SIM card inside the device)
  2. Power on the device and connect to the PC using a USB cord
  3. Now run DC-unlocker
  4. Select Huawei modems > Use autodetect > Click the search button
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5. The device should be detected and all information displayed

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6. Now type the code below and hit Enter

Code:
AT^CIMEI="*****"

where ***** is the 15 digits original IMEI gotten from the carton of your device
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7. You should get "OK" meaning the IMEI was written successfully

8. To write SN number, Launch HxD editor > press "control + N" to open a new file

9. Type the original serial number gotten from the carton of your device into the right-hand side and the hex value should be displayed in the middle


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10. Now type the code below into DC-unlocker and hit Enter
Code:
AT^NVWR=6,16,** ** ** ** ** ** ** ** ** ** ** ** ** ** ** **

where ** ** ** ... is the hex value gotten from HxD editor
11. You should get "OK" meaning the SN number was written successfully
 

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