Today, I am writing article to unlock EC121 Huawei 3G CMDA EVDO Modem Dongle Datacard.  Various network providers provided CDMA 3G Modem Dongle to his users. Unlocking CDMA modem is difficult than GSM 3G / 4G modems / routers. I have found some ways through which you can unlock EC121 Huawei 3G CMDA EVDO Modem Dongle for free. Interest users who have CDMA dongle can now contact me or can comment in comment box if any problem in unlocking his EC121 Huawei 3G CMDA EVDO Modem Dongle. The below provided solution will unlock fully your EC121 Huawei 3G CMDA EVDO Modem Dongle. If you are interested then you can try it out.
 

How to unlock EC121 Huawei 3G CMDA EVDO Modem Dongle Free :

1. Download the EC121 Huawei 3G CMDA EVDO Modem Dongle firmware which download link is provided at the end of the article.
 
2. Now unzip and run the firmware update file.

3. Accept the agreement and click on Next button to proceed.
 
4. On the following window put a check on Auto remove the device after update and click Next
EC122+CDMA+modem+dongle+firmware+update+29
5. Read warning message and click on Start button. 
 
6. Now it will ask you for a password.
EC122 CDMA modem dongle firmware update
EC121 CDMA modem dongle firmware update
7. Put the password of your MEID. (To get the firmware code of your MEID comment your MEID).
 
8. Follow follow the online screen till finish button.
EC122 CDMA modem dongle firmware update - finish
EC121 CDMA modem dongle firmware update – finish
9. Now you have successfully finished firmware update of your EC121 Huawei 3G CMDA EVDO Modem Dongle.
 
10. Now download the CDMA workshop tool 2.7 Pre-cracked version from the download link which is provided at the end of the article.
 
11. Now extract in a folder and run it.
 
12. Now in the COM port drop down list select the com port to which you have connected the EC121 Huawei 3G CMDA EVDO Modem Dongle. (To get the COM Port read this article.)
CDMA Workshop Tool main tab - COM Port
CDMA Workshop Tool main tab – COM Port
13. Now after detecting the COM port click on Connect and your EC121 Huawei 3G CMDA EVDO Modem Dongle will be connect to the CDMA Workshop 2.7.0 tool.
 
14. After the EC121 Huawei 3G CMDA EVDO Modem Dongle is connected select got to the security tab and click Read button.
read flash in cdma workshop tool
read flash in cdma workshop tool
15. When SPC code will be available in the box then click on SPC button. 
 
16. Now you will get two option Send and Write as in below screenshot. Click on Send button and you will get a message spc accepted.
Send SPC as Default in cdma workshop
Send SPC as Default in cdma workshop
17. Now select the Other tab and in the RUIM – select RUIM if availabe or to ruim only and click on the write button.  Now you have successfully unlocked your EC121 Huawei 3G CMDA EVDO Modem Dongle. 
CDMA modem unlock RUIM options
CDMA modem unlock RUIM options
Note : Now you can use both CDMA inbuilt and CDMA of another network provider facility in your EC121 Huawei 3G CMDA EVDO Modem Dongle.  If you select RUIMonly then the default CDMA service will not work and if you select RUIM if available then you can use CDMA service without the sim and CDMA of another network provider when you insert the sim into the  EC121 Huawei 3G CMDA EVDO Modem Dongle.
 
Users are requested to share the successful story to help each other.
 
Soon, we are going to provide unlock solutions of Huawei EC367, EC226, EC186, EC167, EC156, EC150 EC1260 and EC122 CDMA EVDO modems.
 
Now download the latest Unbranded Huawei Mobile Partner Software from this link to use another network provider sim on your unlocked EC122 CDMA modem.
 
Hope you have unlocked your  EC121 Huawei 3G CMDA EVDO Modem Dongle successfully, then like my Facebook Page.
 
Now download and install latest Huawei Mobile Partner software from here in your modem to create network profile as per your network provider.
 

Download  EC121 Huawei 3G CMDA EVDO Modem Dongle Firmware
Download CDMA Workshop Tool 2.7 Cracked Version

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