For example, I will update the firmware on the Samsung GT-C3330, the main reason for the update is the password that is installed on it and forgotten.
First, download the firmware utility C3560_C3750_FlashTool_E2_XMM2150:
https://files.ixnfo.com/Firmware/Samsung/C3560_C3750_FlashTool_E2_XMM2150.zip
Included with the utility also drivers, you need to run their installer.
Next, remove the battery from the phone, connect it to the computer with a USB cable, simultaneously hold the volume button up and down, hold them, insert the battery, the phone starts up in firmware mode.
If the drivers are not immediately installed, then we will restart the computer and then when installing the driver, we specify the path to the folder with the utility.
I first used this firmware file C3330DXKL1_OLAKL1, without the Russian language:
https://files.ixnfo.com/Firmware/Samsung/C3330DXKL1_OLAKL1.zip
If you need Russian, then you can use C3330XEKIA:
https://files.ixnfo.com/Firmware/Samsung/C3330XEKIA.rar.zip
To flash, run the FlashTool_E2.exe utility itself, check that the “Custom Order” checkbox is checked and “Erase whole flash before download” is selected.
Drag and drop the files into the window:
C3330xxxxx_psi.fls
C3330xxxxx_slb.fls
C3330xxxxx_BIN.fls
C3330xxxxx_CDS.fls
C3330Oxxxxx_CSC.dffs
Make sure that the following parameters are selected in the utility:
USB Port = 1
Baud Rate = 921600
# Channels = 1
Communication Driver = Infineon USB Driver
Next, click “Next>”, then “Start USB1” and connect the phone in firmware mode (just remove the battery from the phone, connect it to the computer with a USB cable, simultaneously hold the volume button up and down, holding them and insert the battery).
The process of updating the firmware will automatically begin, it lasted for about a minute.
When it says “Success”, disconnect the phone from the computer, you may need to remove the battery and turn it on.
It is also advisable to perform a full reset by dialing the code *2767*3855# on the phone.
That’s all, the firmware has been updated successfully, the code was not requested at startup.
If you need to view the firmware version, just dial on the phone *#1234#.