Is it possible to integrate GSM PPP on Jetson Nano with the existing prebuilt image?

Hi,
Since Jetpack 4 is EoL:
Announcing End of Life for NVIDIA JetPack™ 4 with the release of JetPack 4.6.6

Please follow developer guide to enabled the configs and rebuild kernel. Please check kernel customization:

https://docs.nvidia.com/jetson/archives/l4t-archived/l4t-3276/index.html#page/Tegra%20Linux%20Driver%20Package%20Development%20Guide/kernel_custom.html#