How can I resolve this error: packages have unmet dependencies: linux-image-oem-20.04b: Depends?

I am getting this error

 The following packages have unmet dependencies:
  linux-image-oem-20.04b : Depends:
 linux-image-5.10.0-1049-oem but it is not going to be installed E: Unmet dependencies. Try 'apt --fix-broken install' with no packages (or specify a solution).

I have tried almost everything and it is not letting me install,remove or update anything.I have also tried manually installing linux-image package but it throws me this error ->

 dpkg: error processing archive
 linux-image-5.10.0-1049-oem_5.10.0-1049.51_amd64.deb (--install): 
 unable to open '/boot/vmlinuz-5.10.0-1049-oem.dpkg-new': Operation not
 permitted Errors were encountered while processing: 

 linux-image-5.10.0-1049-oem_5.10.0-1049.51_amd64.deb

I tried updating the whole system too but it gives me this error

 Transaction failed: The package system is broken  The following
 packages have unmet dependencies: linux-image-oem-20.04b: Depends:
 linux-image-5.10.0-1049-oem but it is not installed

Tried installing the OEM kernel using the below command:

sudo apt install linux-image-5.10.0-1049-oem

and it gives this error:

Preparing to unpack .../linux-image-5.10.0-1049-oem_5.10.0-1049.51_amd64.deb ...
Unpacking linux-image-5.10.0-1049-oem (5.10.0-1049.51) ...
dpkg: error processing archive /var/cache/apt/archives/linux-image-5.10.0-1049-oem_5.10.0-1049.51_amd64.deb (--unpack):
 unable to open '/boot/vmlinuz-5.10.0-1049-oem.dpkg-new': Operation not permitte
d
Errors were encountered while processing:
 /var/cache/apt/archives/linux-image-5.10.0-1049-oem_5.10.0-1049.51_amd64.deb
E: Sub-process /usr/bin/dpkg returned an error code (1)

The error is because of an Anti-Virus utility that is not allowing apt to access the /boot directory. Disable any anti-virus services you are using.

For example, if you're using MacCaffe, run the following commands to fix it (The commands will remove the antivirus utility):

sudo dpkg --purge mfedx 
sudo dpkg --purge mcafeetp 
sudo dpkg --purge mcafeeespaac 
sudo dpkg --purge mcafeeespfileaccess 
Sudo dpkg --purge mcafeeesp 
sudo dpkg --purge mcafeert 
sudo dpkg --purge mfecma 
sudo dpkg --purge mfert

my fix was to disable the antivirus. everything works fine after that

After trying so many things, what worked for me is that I moved my etc/apt folder to some other place, obviously, you can't simply right-click and move that folder. You have to move that folder using terminal, use the below command:

sudo mv etc/apt <destination_path>

After that, try running the below command, and don't worry about the errors.

sudo apt-get update
sudo apt --fix-broken install

And now you have to again move the apt folder back to its place (if the apt folder is auto-generated in /etc/ then delete that folder) using the below command:

sudo mv <source_path_apt_folder> etc/

Now, again run the below commands:

• sudo apt-get update.
• sudo apt full-upgrade(optional)