1. E2120i
2. Samsung Z3X 2G Tool 3.5.0038
3. J750 Cable

Steps :-

1. Select Model 2121B.
2. Do "Erase EEP"
3. Download E2120IDDJE1 & CSC From Support.
4. Extract & Select Files.
5. Write FW.
6. After Flash, Note IMEI & SR. No. From Sticker of the Phone and Write in upper IMEI & Sr. No. Boxes.
7. Do "Custom Repair"
8. After Turn On the phone do hard reset [*2767*3855#]

LOG :-

Selected model: E2121B
Selected com port: COM23
Selected speed port: 921600
Please, connect phone and press power button 3 seconds
Phone Detected
Sending loader1... OK
Flash ID: 08
Sending loader2... OK
Erase - ok
Elapsed time: 100 second, sw ver: 3.5.0038
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Selected model: E2121B
Selected com port: COM23
Selected speed port: 921600
Please, connect phone and press power button 3 seconds
Phone Detected
Sending loader1... OK
Flash ID: 08
Sending loader2... OK
Start TFS format... OK
Start NOR flash
NOR flash - ok
Start Flash TFS
TFS flash - ok
Start Flash CSC
CSC format - ok
CSC flash - ok
Download - ok
Elapsed time: 720 second, sw ver: 3.5.0038
-------------------------------------------------------------------------------
Selected model: E2121B
Selected com port: COM23
Selected speed port: 921600
Please, connect phone and press power button 3 seconds
Phone Detected
Use automatic parameters
Phone in TAT MODE
Phone SW: E2120iDDJE1
Phone CSC: E2120iODDJE1
Phone BT ADDR: 0012-47-000001
Phone IMEI: 00000000000000
Deactivated MSL - TRUE
Write imei - ok
Repair - ok
Elapsed time: 28 second, sw ver: 3.5.0038
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