Install VPI3 on Jetpack 5.1.5 (Jetson Xavier NX)

Hi!
I’m on jetson Xavier NX. Ho can I install VPI3 in it. I came along with this post on the forum which suggests that VPI on jetson platforms only comes with the jetpack (while on x86 machines we can install specific version). But how can I install latest VPI versions on jetson? Currently I’m on jetpack 5.1.5 and it comes with VPI 2.4.8. I can’t update to jetpack 6.x (as it’s not available for jetson Xavier NX) which has VPI3 in it. So how to only update my VPI package to upper versions?
My terminal log when i try to install VPI3 using the installation guide:

sudo apt-get update
[sudo] password for talha: 
Hit:1 http://ports.ubuntu.com/ubuntu-ports focal InRelease
Hit:2 http://ports.ubuntu.com/ubuntu-ports focal-updates InRelease                                                                                                                                        
Ign:3 https://repository.mullvad.net/deb/stable stable InRelease                                                                                                                                          
Hit:4 http://ports.ubuntu.com/ubuntu-ports focal-backports InRelease                                                                                                                                      
Hit:5 https://screenrec.com/download/ubuntu stable InRelease                                                                                                                                        
Hit:6 http://ports.ubuntu.com/ubuntu-ports focal-security InRelease                                                                                                                                       
Hit:8 https://apt.kitware.com/ubuntu focal InRelease                                                                                                                                                      
Hit:9 https://repo.download.nvidia.com/jetson/x86_64/focal r36.2 InRelease                                          
Hit:7 https://packages.microsoft.com/repos/code stable InRelease                                                    
Hit:10 https://repository.mullvad.net/deb/stable stable Release                                        
Hit:11 https://repo.download.nvidia.com/jetson/common r35.6 InRelease            
Get:12 https://repo.download.nvidia.com/jetson/t194 r35.6 InRelease [2,553 B]
Hit:13 https://repo.download.nvidia.com/jetson/ffmpeg r35.6 InRelease
Fetched 2,553 B in 7s (379 B/s)                                                                                                                                                                           
Reading package lists... Done
N: Skipping acquire of configured file 'main/binary-arm64/Packages' as repository 'https://screenrec.com/download/ubuntu stable InRelease' doesn't support architecture 'arm64'
N: Skipping acquire of configured file 'main/binary-arm64/Packages' as repository 'https://repo.download.nvidia.com/jetson/x86_64/focal r36.2 InRelease' doesn't support architecture 'arm64'
talha@ubuntu:~$ sudo apt-get install libnvvpi3
Reading package lists... Done
Building dependency tree       
Reading state information... Done
E: Unable to locate package libnvvpi3

Hi,

VPI 3 is not available for the JetPack 5 environment.

Thanks.