bios flash problem

Run it in increasement from A10, A11, and then A12.  Try to update from Windows and if it fails, try to update from BIOS.  Following the steps below.

Updating the BIOS from Windows

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.

Download and Installation
1. Click Download File.
2. Click Save to save the file to your hard drive.
3. Browse to the location where you downloaded the file.
4. Double-click the new file.
5. The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

Updating the BIOS from DOS (Non-Windows users)

Note 1: Before updating the BIOS, ensure that you suspend BitLocker encryption on a BitLocker-enabled system. If BitLocker is not enabled on your system, you can ignore this step. For information about how to disable BitLocker, see How to Enable or Disable BitLocker with TPM in Windows at support.dell.com.
Note 2: Do not turn off power or interrupt the BIOS update process during the update.
Note 3: Your system requires a restart after installing the BIOS. The restart can be deferred but must be completed to ensure that the update is installed.

Installation
Note: You must provide a bootable USB drive. This executable file does not create the DOS system files.
1. Copy the downloaded file to a bootable USB drive.
2. Power on the system and then Press the F12 key.
3. Select USB Storage Device and boot to the DOS prompt.
4. Run the file by typing following command. For example:
A:\ N4110A12.exe
Note: N4110A12.exe is an example. You can change the product and model number based on the supported platform.

Where A is the drive letter of the USB device where the executable file is located and N4110A12.exe is the name of the downloaded file.
The system restarts automatically and updates the BIOS at the system startup screen. After the BIOS update is complete, system restarts again.

Other reference article https://www.dell.com/support/kbdoc/en-us/000123870/how-to-flash-the-bios-on-a-dell-desktop-or-notebook-with-a-usb-thumb-drive

@Chino de Oro​ sir but i am facing the problem my  pc will shutdown automatically when i run the n4110A12 i will reboot but my pc will shutdown and not on automatically and when i manually turn there is no bios flash 

@Chino de Oro​ and sir i am facing another problem when i create bootable usb when go to boot menu and click on usb pc show (OPERATING SYSTEM NOT FOUND)

@ejn63​ bro can inspiron n4110 not support windows 10 to flash bios

You are suppoese to flash BIOS under windows 7, just make a bootable USB flash drive with ventoy or anything you like to boot in to a windows 7 PE system and run BIOS update program