Remove Lock Code in NOKIA 3510i

Remove the lock code by flashing the device in NOKIA 3510i

If you have forgotten the security password (also known as a lock code) for your NOKIA 3510i and there is no other way to perform the hard reset you should try uploading a new firmware by performing the flash operation on your cell phone. That way you will restore the default password but also lose all data on your device and bring all settings to the factory state. 

In the following tutorial, we present step by step on how to perform such an operation. Please be aware of the consequences and risks that may result from this process.

To accomplish successfully the whole operation you should perform the followings steps:

  1. Install the Nokia Care Suite.
  2. Read the product code
  3. Download Nokia’s firmware
  4. Flash your device

How to install the Nokia Care Suite.

  1. First of all, download the Nokia Care Suite on your PC. You can find it here: Nokia_Care_Suite
  2. Afterwards, extract the package with the application.
  3. Open the Nokia Care Suite folder and click on the installer application. In my case, this file is named Nokia Care Suite PST 5.0 2013.13.4.4.
  4. Follow the standard installation process by selecting Next and accepting the terms in the license agreement.  Flash nokia install nokia care suite
  5. Make sure that you chose the Complete setup type. Nokia flash remove code nokia care suite
  6. Start the building in a process by selecting Install option. Nokia flash remove code nokia care suite
  7. As soon as the information about successfully completed installation appears on the screen choose Finish. Nokia flash remove code nokia care suite
  8. Afterwards, copy from Nokia Care Suite directory and replace the usergroupsconfiguration.cfg file to:                                                                                                                                                         C:\Program Files (x86)\Nokia\Nokia Care Suite\Product Support Tool For Store 5.0 if you’re running a 64-bit version of Windows                                                                                                           C:\Program Files\Nokia\Nokia Care Suite\Product Support Tool For Store 5.0 if you’re running a 32-bit version of Windows. 
  9. Excellent! The Nokia Suite has just been installed.


How to read the product code

Method 1:

  1. In the first step connect your phone to the PC. Make sure that the device is turned on and choose PC Suite or Ovi Suite.
  2. Then open the Nokia BEST application and wait until your phone is properly detected.
  3. In the top menu open the Service Tool section. Nokia flash remove code nokia care suite
  4. Finally, choose the Read Info operation and find the information about the Product Code on the black screen. Nokia flash remove code best bb5 service tool

Method 2:

  1. First of all, remove the back cover and the battery.
  2. Afterwards, find the information about the device’s Product Code which should figure as a Code: XXXXXXX

Important Tip:

If you need to download a different firmware version for the NOKIA 3510i, you should look for the appropriate code in the section Product Codes. You can choose here the firmware that suits to your needs the best by choosing, for example cellular network, country or navigation options.


How to download Nokia’s firmware

All needed firmware can download from


How to flash your device

  1. Start by downloading the Nokia BEST application on your PC. You may find it here: Nokia_ BEST_simlock_pl.exe
  2. In the next step extract the package with the application.
  3. Turn on your device and connect it to your PC using the Micro USB cable.  When your computer detects the new device, select the PC Suite or OVI Suite on your phone.
  4. Afterwards, open the Nokia BEST folder and double click on the Start BEST icon. Nokia flash remove code firmware file list
  5. Then from the top menu open Settings section, choose DataPackage path and check the address to folder which should contain the firmware files. Nokia flash remove code start best
  6. Open the folder from the checked path and in that place paste the folder with the phone’s software. The folder should be named by RM-XXX. Nokia flash remove code best data package path
  7. Next, in the Nokia BEST interface go to Flashing menu and make sure that the files load automatically to the empty brackets. Nokia flash remove code open flashing window
  8. Make sure that you have selected the following options Use INI, Backup, Chk/Read, Set Normal and FactorySet. Nokia flash remove code use ini
  9. In order to start the whole operation click on the Flash icon.
  10. Well done! After a while, the flash should be completed. Your phone will erase all data and settings and your lock code will come back to standard one.


What can go wrong

  • If the Nokia BEST does not automatically load the firmware files in the empty brackets you can do two things:
    • Reload the path to the folder with phone’s firmware by selecting Settings, choosing a DataPackage path and tapping Change active dir. When the window with available options appears to choose the same path as it was before. Nokia flash remove code change active dir
    • In Flashing section choose a manual option for a few seconds. Nokia flash remove code select manual
    • Afterwards go back to Use INI option and the files should load in the empty brackets. Nokia flash remove code  use ini
  • If the Nokia BEST disconnects your device while flashing the device and you are asked to connect the phone, on the selected interface do the following sequence:
    • Replace the battery from your phone for a moment.
    • Disconnect your phone from the computer.
    • Turn on the phone by holding the power button.
    • Connect your phone to the computer and choose PC Suite or Ovi Suite.
    • Click on the Flash icon and the operation will be continuing
  • If your phone while flashing switches on and does not want to turn back on, do the following steps:
    • Disconnect and connect your phone to the computer into PC Suite or Ovi Suite.
    • In the flashing section choose Dead Mode and click on FLASH. Nokia flash remove code dead mode
    •  If the Nokia BEST asks you to press the power button on your phone, do it immediately.

rating star rating star rating star rating star rating star
Rating: 4.3 - 7 reviews